Physics Department, University of California at Berkeley,   Berkeley, CA 94720, Phone: (510) 642-1664


Publication List




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# Title Citation Date Journal
130 A continuously operating, flux locked, superfluid interferometer A. Joshi and R. Packard, Journal of Low Temperature Physics (Online First), January 2013 2013/01 JLTP
129 Superfluid helium interferometers Y. Sato and R. E. Packard, Phys. Today 65, 31 (2012) 2012/10 Physics Today
128 Superfluid helium quantum interference devices: physics and applications Y. Sato and R. E. Packard, Rep. Prog. Phys. 75 (2012) 016401 2011/12 Rep. Prog. Phys.
127 On detecting absolute quantum mechanical phase differences with superfluid interferometers Y. Sato and R. Packard, Physica E, vol. 43, Issue 3, Pages 702-706, January 2011 2011/01 Physica E
126 DC-SQUID based neodymium magnet displacement sensor for superfluid experiments Y. Sato and R. Packard, Review of Scientific Instruments 80, 055102 (2009) 2009/05 Rev. Sci. Instr.
125 Fabricating nanoscale aperture arrays for superfluid helium-4 weak link experiments A. Joshi, Y. Sato, and R. Packard, J. Phys.: Conf. Ser. 150 012018 (2009) 2008/08 Conf. LT
124 Direct verification of the relation υs = (hbar/m) ▽phi Y. Sato, A. Joshi, and R. Packard, J. Phys.: Conf. Ser. 150, 032092 (2009) 2008/08 Conf. LT
123 On the feasibility of detecting an Aharonov-Bohm phase shift in neutral matter Y. Sato and R. Packard, J. Phys.: Conf. Ser. 150 032093 (2009) 2008/08 Conf. LT
122  Superfluid 4He Quantum Interference Grating  Y. Sato, A. Joshi, and R. Packard, Phys. Rev. Lett. 101, 085302 (2008)  2008/08 PRL
121 Simulations of Phase Slippage in an Aperture Array Yuki Sato, Emile Hoskinson and Richard Packard, Journal of Low Temperature Physics, Volume 149, Numbers 5-6, Pages 222-229, 2007 2007/10 JLTP
120 Flux locking a superfluid interferometer   (copyright info) Y. Sato, A. Joshi, and R. Packard, Appl. Phys. Lett. 91, 074107 (2007) 2007/08 Appl. Phys. Lett.
119 Observation of an extrinsic critical velocity using matter wave interferometry Y. Sato, A. Joshi, and R. Packard, Phys. Rev. B 76, 052505 (2007)
2007/08 Phys. Rev. B
118  Direct Measurement of Quantum Phase Gradients in Superfluid 4He Flow Y. Sato, A. Joshi, and R. Packard,  Phys. Rev. Lett. 98, 195302 (2007) 2007/05 PRL
117 Transition from synchronous to asynchronous superfluid phase slippage in an aperture array  Y. Sato, E. Hoskinson, and R. E. Packard. Phys. Rev. B 74, 144502 (2006)
2006/08 Phys. Rev. B
116 Superfluid 4He interferometer operating near 2 K E. Hoskinson, Y. Sato, and R. Packard. Phys. Rev. B 74, 100509 (2006) 2006/07 Phys. Rev. B
115 Transition from phase slips to the Josephson effect in a superfluid 4He weak link E. Hoskinson, Y. Sato, I. Hahn and R. E. Packard, Nature Physics, Volume 2 No 1, pp23 - 26 (January 2006) 2006/01 Nature Physics
114 A Chemical Potential “Battery” for Superfluid 4He Weak Links  E. Hoskinson, Y. Sato, K. Penanen, and R. E. Packard, AIP Conf. Proc. 850, 117 (2006). [Proceedings of the 24th International Conference on Low Temperature Physics, August 2005] 2006 Conf. LT
113 Calibration Technique for Superfluid 4He Weak-Link Cells Based on the Fountain Effect E. Hoskinson and R. E. Packard, AIP Conf. Proc. 850, 119 (2006). [Proceedings of the 24th International Conference on Low Temperature Physics, August 2005] 2006 Conf. LT
112 Berkeley Experiments on Superfluid Macroscopic Quantum Effects Richard Packard, AIP Conf. Proc. 850, 3 (2006) [2005 London Memorial Prize lecture] 2006 Conf. LT
111 On the Feasibility of Detecting Quantized Conductance in Neutral Matter Yuki Sato, Byeong-Ho Eom, and Richard Packard, Journal of Low Temperature Physics, Vol. 141, Nos. 3/4, November 2005 2005/11 JLTP
110 Thermally Driven Josephson Oscillations in Superfluid 4He E. Hoskinson, R. E. Packard, Physical Review Letters 94, 155303 (2005) 2005 PRL
109 Quantum Whistling in Superfluid He-4 E. Hoskinson, R.E. Packard, T.M. Haard; Nature, Vol 433, p 376, 27 January 2005 2005/01 Nature
108 Vortex Formation and Annihilation in Three Textures of Rotating Superfluid He-3-A R. Ishiguro, M.Yamashita, O.Ishikawa, Y.Sasaki, K.Fukuda, M.Kubota H.Ishimoto, T.Mizusaki, T.Ohmi, T.Takagi, R.E.Packard; Physical Review Letters Vol 93, Num 12 Sept 2004 2004/09 PRL
107 Effect of He-3 on Third Sound Attenuation in Thick He-4 Films K. Penanen, J.A.Hoffmann, J.C.Davis, R.E.Packard Journal of Low Temperature Physics, Vol134, Nos 5/6, March 2004 2004/03 JLTP
106 Measurements of Attenuation of THird Sound: Evidence of Trapped Vorticity in Thick Films of Superfluid He-4 J.A.Hoffmann, K.Penanen, J.C.Davis, R.E.Packard; Journal of Low Temperature Physics Vol135, Nos.3/4 May2004 2004/05 JLTP
105 Phase Slips and Josephson Weak Links in Superfluid Helium R.E.Packard; Journal of Low Temperature Physics Vol.135 Nos. 5/6 June 2004 2004/06 JLTP
104 Velocity-dependent effectiv inertial mass in Superfluid He-3 K.Penanen, R.E.Packard PhysicalReview B 68 (092504) 2003 2003 Phys. Rev. B
103 Vortex nucleation and texture of roating He-3-A in cylindrical cells with R similar or equal to 10 xi(D) R. Ishiguro, M.Yamashita, T.Igarashi, E.Hayata, O.Ishikawa, Y.Sasaki, K.Fukuda, M.Kubota H.Ishimoto, T.Mizusaki, T.Ohmi, T.Takagi, R.E.Packard, Physica B (329-333) May 2003 2003/05 Physica B
102 Numerical Studies of Superfluid Shapiro effect R.W.Simmonds, A.Marchenkov, J.C.Davis, R.E.Packard Physica B (329-333) 2003 2003/05 Physica B
101 Development of a computer-based pulsed NMR thermometer Hobeika A, Haard T.M., Hoskinson E.M., Packard R.E. Physica B-Condensed Matter 329, 1610 Part 2 May 2003 2003/05 Physica B
100 Large area multiturn superfluid phase slip gyroscope Bruckner N., Packard R. J. Of Appl. Phys. 93, 1798 Feb 2003 2003/02 J. Appl. Phys.
99 Superfluid He-3 Josephson weak links Davis J.C., Packard R.E. Rev. Of. Mod. Phys., 74, 741, Jul 2002 2002/07 Rev. Mod. Phys.
98 A model for third sound attenuation in thick He-4 films Penanen K., Packard R.E. J. Of Low Temp. Phys., 128, 25, Jul 2002 2002/07 JLTP
97 Ballistic effusion of normal liquid He-3 through nanoscale apertures Marchenkov A., Simmonds RW., Davis J.C., and Packard R., Phys. Rev. B, 65, 075414, Feb 2002 2002/02 Phys. Rev. B
96 Observation of the superfluid Shapiro effect in a He-3 weak link Simmonds R.W., Marchenkov A., Davis J.C., and Packard R.E., Phys. Rev. Lett., 87, 035301, Jul 2001 2001/07 PRL
95 Quantum interference of superfluid He-3 Simmonds R.W., Marchenkov A., Hoskinson E., Davis J.C., and Packard R.E., NATURE, 412 (6842): 55 Jul 2001 2001/07 Nature
94 An aperture array oscillator in superfluid He-4 Bruckner N, Packard R, Physica B, 284, 81, Part 1, Jul 2000 2000/07 Physica B
93 NMR measurements of superfluid He-3-A in cylindrical cell under rotation Ishikawa O, Ishiguro R, et al., Physica B, 284, 248, Part 1, Jul 2000 2000/07 Physica B
92 Equilibrium thickness of saturated superfluid He-3 films on a copper substrate Schechter A.M.R., Hoffmann J.A., Packard R.E., Davis J.C., Physica B, 284, 275, Part 1, Jul 2000 2000/07 Physica B
91 Quality factor of a superfluid 3He weak link resonator Proceedings of the 22d International Conference on Low Temperature Physics, LT22, August 1999. R. W. Simmonds, A. Marchenkov, J.C. Davis and R.E. Packard, August 1999 1999/08 Conf. LT
90 Studies of a diaphragm-aperture array oscillator in superfluid 4He N. Bruckner and R. Packard, Proceedings of the 22d International Conference on Low Temperature Physics, LT22, August 1999. 1999/08 Conf. LT
89 New flow dissipation mechanisms in superfluid 3He R.W. Simmonds, A Marchenkov, S. Vitale, J.C. Davis and R.E. Packard, Physical Review Letters, 84, 6062 (2000) 2000 PRL
88 The discovery of bi-stability in superfluid 3He weak links A. Marchenkov, R.W. Simmonds, A. Loshak, J.C. Davis, and R. E. Packard, Physical Review Letters, 83, 3860 (1999) 1999 PRL
87 Observation of the Josephson Plasma mode for a superfluid 3He weak link A. Marchenkov, R.W. Simmonds, A. Loshak, J.C. Davis, and R. E. Packard, Physical Review B, 61, 4196 (1999) 1999 Phys. Rev. B
86 Discovery of third sound in superfluid 3He films A Schechter, R. Simmonds, R.E. Packard and J.C. Davis, Nature, 396, 554-557 (1998) 1998 Nature
85 Shot-noise acoustic radiation from a 4He phase slip aperture S. Backhaus and R.E. Packard, Phys. Rev. Letters, 81, 1893 (1998). 1998 PRL
84 dc Supercurrents from Resonant Mixing of Josephson Oscillations in a He-3 Weak Link R. W. Simmonds, A. Loshak, A. Marchenkov, S. Backhaus, S. Pereversev, S. Vitale, J. C. Davis, and R. E. Packard , Phys. Rev. Letters, 81, 1247 (1998) 1998 PRL
83 The role of the Josephson-Anderson equation in superfluid helium R. Packard, Rev. Mod. Physics, 70, 641-652 ( 1998) 1998 Rev. Mod. Phys.
82 Discovery of a metastable p state for a superfluid 3He weak link S. Backhaus, R. Simmonds, A. Loshak, S. Pereversev, J.C. Davis and R. E. Packard, Nature 392, 687 (1998) 1998 Nature
81 Detection of absolute rotation using superfluid 4He K. Schwab, N. Brukner and R. Packard, Low Temp. Phys., 24, 102 (1998) 1998 JLTP
80 The superfluid 4He analog of the rf-SQUID K. Schwab, N. Bruckner and R.E. Packard, J. Of Low Temp. Phys., 110, 1043 (1998) 1998 JLTP
79 Direct Measurement of the current-phase relationship of a superfluid 3He-B weak link S. Backhaus, S. Pereversev, A. Loshak, J.C. Davis and R.E. Packard, Science 278, 1435 (1997) 1997 Science
78 Thermoviscous effects in steady and oscillating flow of superfluid 4He experiments S. Backhaus, K. Schwab, A. Loshak, S. Pereversev, N. Bruckner, J. C. Davis and R.E. Packard, J. Of Low Temp. Phys.,Vol 109 nos.3-4, pp 527-546, Nov 1997 1997 JLTP
77 Quantum Oscillations in a superfluid 3He-B weak link S.V. Pereversev, A Loshak, S. Backhaus, J.C. Davis and R. E. Packard, Nature, 338,  449-451, (1997) 1997 Nature
76 Detection of the Earth's rotation using superfluid phase coherence K. Schwab, N. Bruckner and R.E. Packard, Nature, 386, 585 (1997) 1997 Nature
75 Phase slip memory effects in dissipation-free superflow K. Schwab, J. Steinhauer and R.E. Packard, Phys. Rev. B, 55, 8094 (1997) 1997 Phys. Rev. B
74 An improved low temperature valve N. Bruckner, S. Backhaus, and R.E. Packard, Proc. of the 21st International Conference on Low Temperature Physics, Czech. Journal of Physics, 46, 2741 (1996). 1996 Conf. LT
73 A method to maintain superflow at constant pressure drive S. Backhaus and R. E. Packard, Proc. of the 21st International Conference on Low Temperature Physics, Czech. Journal of Physics, 46, 2743(1996). 1996 Conf. LT
72 The intrinsic critical velocity near T_lambda Scott Backhaus, N. Bruckner, A. Loshak, K. Schwab and R. E. Packard, Proc. of the 21st International Conference on Low Temperature Physics, Czech. Journal of Physics, 46, 127 (1996) 1996 Conf. LT
71 A microfabricated superfluid 4He “RF Squid”,K. Schwab J. C. Davis and R. E. Packard, Proc. of the 21st International Conference on Low Temperature Physics, Czech. Journal of Physics, 46, (1996) 1996 Conf. LT
70 Study of an Array of superfluid 3He weak links Yu. Mukharsky, A. Loshak, K. Schwab, J.C. Davis and R.E. Packard, Proc. of the 21st International Conference on Low Temperature Physics, Czech. Journal of Physics, 46, 115 (1996). 1996 Conf. LT
69 Fabrication of a Silicon Based Superfluid Oscillator K. Schwab, J. Steinhauer and R. E. Packard, IEEE Journal of Micromechanical Systems, 5, Sept. 1996 1996/09 IEEE
68 The Relationship Between the Josephson Frequency and the Arrhenius Rate for Vortex Nucleation in Superfluid 4He J. Steinhauer, S. Backhaus and Richard E. Packard. Phys. Rev. B, 52, 9654 (1995). 1995 Phys. Rev. B
67 The Determination of the Energy Barrier for Phase Slips in Superfluid 4He J. Steinhauer, K. Schwab, Y. Mukharsky, J.C. Davis and R. E. Packard, J. Of Low Temp. Phys., 100, 281(1995). 1995 JLTP
66 Vortex Nucleation in Superfluid 4He J. Steinhauer, K. Schwab, Yu. Mukharsky, J.C. Davis and Richard Packard,  Phys. Rev. Letters, 74, 5056, (1995). 1995 PRL
65 Liquid Helium Macmillan Encyclopedia of Physics, accepted for publication 1995. 1995
64 Quantized Vortices McGraw Hill Encyclopedia of Science and Technology, accepted for publication 1995. 1995
63 A Mechanical Measurement of Textural Relaxation in Superfluid 3He-A at Very Low Temperatures R.J. Zieve, Yu. M. Mukharsky, J. C. Davis, and Richard Packard Jour. Of Low Temp. Phys.,99, 1 (1995). 1995 JLTP
62 Phase Slips in Space Richard E. Packard,  Proc. of the NASA/JPL 1994 Microgravity Low Temperature Physics Workshop, JPL D-11775, 292 1994 Conf. JPL
61 Effect of 3He Impurities on the Nucleation of Phase Slips in Superfluid 4He Y. M. Mukharsky, K. Schwab, J. Steinhauer, A.Amar, Y. Sasaki, J. C. Davis, and R.E. Packard, 20th International Conference on Low Temperature Physics, Aug 1993 1993/08 Conf. LT
60 The Characteristic Response Curve, I(Ø), of a 3He Weak Link J. Steinhauer, K. Schwab, Yu. M. Mukharsky, J.C. Davis and R.E. Packard, 20th International Conference on Low Temperature Physics, Aug 1993 1993/08 Conf. LT
59 Investigations of Quantized Circulation in Superfluid 3He-B R.J. Zieve, Yu. M. Mukharsky,  J. D. Close, J. C. Davis and R. E. Packard; J. Low Temp. Physics, 91, 315 (1993) 1993 JLTP
58 Stable Circulation in Superfluid 3He-A R. J. Zieve, Yu. Mukharsky, J. D. Close,J.C. Davis and R. E. Packard; J. of Low Temp. Physics, 89, 47 (1992) 1992 JLTP
57 A Method to Fabricate Submicron Holes in Very Thin Silicon Nitride Membranes A. Amar, R. L. Lozes and R.E. Packard,  J. of Vacuum Technology, April 1993 1993/04 J. Vac. Tech
56 New Experiments on Quantized Circulation in Superfluid 4He R.J. Zieve,  J. D. Close, J, C, Davis and R. E. Packard,  J. of Low Temp. Physics 90, 243 (1993) 1993 JLTP
55  Experiments on Quantized Circulation in Superfluid 3He  J.C. Davis, J.D. Close, R. Zieve and Richard E. Packard. Physica 178, 73 (1992) 1992  Physica
54  Evidence for Quantum Tunnelling of Phase-Slip Critical Velocities in Superfluid 4He J. C. Davis, J. Steinhauer, K. Schwab, Yu. Mukharsky, A. Amar, Y. Sasaki and R. E. Packard,  Phys. Rev. Letters, 69, 323 (1992) 1992 PRL
53 Quantized Phase Slips in Superfluid 4He A. Amar, Y. Sasaki, J. C. Davis and R.E. Packard,  Phys. Rev. Letters 68, 2624, 1992 1992 PRL
52 Principles of Superfluid Gyroscopes R. E. Packard and S. Vitale, Phys. Rev. B, 46, 3540 (1992) 1992 Phys. Rev. B
51 Precession of a Single Vortex Line in Superfluid 3He R.J. Zieve, Yu. Mukharsky, J. D. Close, J, C, Davis and R. E. Packard, Phys. Rev. Letters, 68, 1327 (1992) 1992 PRL
50 Some Phenomenological Theoretical Aspects of Superfluid Critical Velocities R.E. Packard and S. Vitale, Phys. Rev. B, 45 2512 (1992) 1992 Phys. Rev. B
49 The Superfluid Helium Gyroscope: An Emerging Technology for Earth Rotation Studies J. C. Davis and R. E. Packard, Proc. of the AGU Chapman Conference on Geodetic VLBI: Monitoring Global Change, NOAA Technical Report Nos. 137 NGS 49 (1991) 1991 Conf. VLBI
48 Observation of Quantized Circulation in Superfluid 3He J.C. Davis, R.J. Zieve, J.D. Close and R.E. Packard, Phys. Rev. Letters, 66, 329 (1990) 1990 PRL
47 Vibrating Wire Measurements of Circulation in Superfluid 3He J.C. Davis, R.J. Zieve, J.D. Close and R.E. Packard, Physica 165 and 166  (1990) 1990 Physica
46 Phase Slips in the Flow of Superfluid 4He Through a Submicron Orifice A. Amar, J.C. Davis R.E. Packard and R.L. Lozes, Physica 165 and 166 753 (1990) 1990 Physica
45 Continuously pumped rotating millikelvin cryostat J. D. Close, R. J. Zieve, J. C. Davis and R. E. Packard.  ; Physica B 165 and 166, 57 (1990). 1990 Physica B
44 On the superfluidity of 3He films J.C. Davis, A. Amar, J.P. Pekola and R.E. Packard. Phys. Rev. Lett. 60, 302 (1988). 1988 PRL
43 Evidence of thermally activated dissipation in flowing superfluid 3He J. P. Pekola, J. C. Davis and R. E. Packard, J. Low Temp. Phys. 71, 141 (1988). 1988 JLTP
42 Observations on the flow properties of 3He films below 1 mK J. C. Davis, A. Amar, J. P. Pekola and R. E. Packard. , in Proceedings 18th Int. Conf. on Low Temperature Physics, Kyoto, p. 147 (1987), and Japanese J. of Appl. Phys. Vol. 26 Supplement 26-3 (1987). 1987 Conf. LT
41 Suppression of the critical current and the superfluid transition temperature of 3He in a single submicron cylindrical channel. J. P. Pekola, J. C. Davis, Z. Yu-Qun, R. N. R. Spohr, P. B. Price, and R. E. Packard. J. Of Low Temp. Phys. 67, 47 (1987). 1987 JLTP
40 Manufacture, observation, and test of membranes with locatable single pores R. E. Packard, J. P. Pekola, P. B. Price, R. N. R. Spohr, K. H. Westmacott and Zhu Yu-Qun.  ; Rev. Sci. Instrum. 57 (8), 1654 (1986). 1987 Rev. Sci. Instr.
39 Phase diagram of the first-order vortex-core transition in superfluid 3He-B J. P. Pekola, J. T. Simola, P. J. Hakonen, M. Krusius, O. V. Lounasmaa, K. K. Nummila, G. Mamniashuili, G. E. Volovik and R. E. Packard. Phys.Rev. Lett. 53, 584 (1984). 1984 PRL
38 Persistant current experiments on superfluid 3He-Band  3He-A. J. P. Pekola, J. T. Simola, K. K. Nummila, O. V. Lounasmaa, and R. E. Packard.  Phys. Rev. Lett. 53, 70 (1984). 1984 PRL
37 A silicon fourth sound resonator K. Daly and R. E. Packard.  , in Proceedings of the 17th International Conference on Low Temp. Physics, North Holland Park, California, 1984, U. Eckern, A. Schmid, W. Weber, H. Wuhl (eds), Elsevier Science Publishers B.V., p. 73-74 (1984). 1984 Conf. LT
36 Persistent current experiments on superfluid 3He Pekola, J. T. Simola, K. K. Nummila, O. V. Lounasmaa, R. E. Packard. , in Proceedings of the 17th International Conference on Low Temp. Physics, North Holland Park, California, 1984, U. Eckern, A. Schmid, W. Weber, H. Wuhl (eds), Elsevier Science Publishers B.V., p. 35-36 (1984). 1984 Conf. LT
35 Observation of flow dissipation in 3He-B. J. P. Eisenstein and R. E. Packard. Phys. Rev. Lett. 49, 564 (1982). 1982 PRL
34 Photographic studies of quantized vortex lines. E. J. Yarmchuk and R. E. Packard.    J. Low Temp. Phys. Nos. 5/6 (1982). 1982 JLTP
33 Vortex photography in liquid helium R. E. Packard. ; Physica 109 & 110B, 1474 (1982). 1982 Physica
32 A measurement of anisotropy in the dielectric constant of 3He-A.  G. W. Swift, J. P. Eisenstein and R. E. Packard. Physica 107B, 283 (1981). 1981 Physica
31 Helium gas purity monitor for recovery systems S. L. Garrett, G. W. Swift and R. E. Packard.  Physica 107B, 601 (1981). 1981 Physica
30 Quasiparticle mean free path and Poiseuille flow in normal liquid 3He. J. P. Eisenstein, G.W. Swift and R. E. Packard. Physica 108B, 1061 (1981). 1981 Physica
29 Rapid shutdown and restart of a millikelvin cryostat J. P. Eisenstein, G. W. Swift and R. E. Packard. Cryogenics, April 1981, p. 241 (1981). 1981 Cryogenics
26 Measurement of anisotropy in the dielectric constant of 3He-A. G. W. Swift, J. P. Eisenstein and R. E. Packard. Phys. Rev. Lett. 45, 1955 (1980). 1980 PRL
25 Influence of a magnetic field on flowing superfluid 3He. J. P. Eisenstein, G. W. Swift and R. E. Packard. Phys. Rev. Lett. 45, 1569 (1980). 1980 PRL
24 The effect of quasiparticle mean free path on Poiseuille flow in normal liquid 3He. J. P. Eisenstein, G. W. Swift and R. E. Packard. Phys. Rev. Lett. 45, 1199 (1980). 1980 PRL
23 A technique for photographing vortex positions in rotating superfluid helium G. A. Williams and R. Packard. J. Low Temp. Phys. 39, 553 (1980). 1980 JLTP
22 A microprocessor controller for a nuclear demagnetization cryostat J. P. Eisenstein, G. W. Swift and R. Packard. Cryogenics 19, 666 (1979). 1979 Cryogenics
21 Observation of a critical current in 3He-B. J. Eisenstein, G. W. Swift and R. Packard. Phys. Rev. Lett. 43, 1676 (1979). 1979 PRL
20 Observation of stationary vortex arrays in rotating superfluid helium. E. J. Yarmchuk, M. J. V. Gordon and R. Packard. Phys. Rev. Lett. 43, 214 (1979). 1979 PRL
19 Thermal contraction of Vespel SP-22 and Stycast 1266 from 300K to 4K. G. W. Swift and R. Packard. Cryogenics 19, 362 (1979). 1979 Cryogenics
18 Ion trapping on vortex lines in rotating 3He-4He mixtures G. A. Williams and R. Packard. J. Low Temp. Phys. 33, 459 (1978). 1978 JLTP
17 Vortex photography:  a progress report M. Gordon, G. A. Williams and R. Packard.   in Proceedings of 15th International Low Temperature Conference, August 1979, J. de Physique, Colloque C6, 8, Tome 39, p.C6-1/2 (1978). 1978 Conf. LT
16 Photography of vortex lines G. A. Williams and R. Packard.  in McGraw-Hill Yearbook of Science and Technology, McGraw-Hill Book Co., New York, p. 204 (1975). 1975
15 Effect of 3He impurities on the lifetime of ions trapped on quantized vortex lines. G. A. Williams and R. Packard. Phys. Rev. Lett. 35, 237 (1975). 1975 PRL
14 Measurement of equilibrium critical velocities for vortex information in superfluid helium. K. DeConde and R. Packard. Phys. Rev. Lett. 35, 732 (1975); also covered in Measurement of critical velocities for vortex creation:  The attainment of the equilibrium state in rotating helium, 14th International Symposium of Low Temperature Physics (1975). 1975 PRL
13 Positive ion trapping on vortex lines in rotating He II A. Williams, K. Deconde and R. Packard. Phys. Rev. Lett. 34, 924 (1975); also covered in Trapped ion lifetimes in 3He-4He superfluid mixtures, 14th International Symposium on Low Temperature Physics (1975). 1975 PRL
12 New factors affecting the measured lifetime of electrons trapped on vortex lines in He II K. DeConde, G. A. Williams and R. Packard. Phys. Rev. Lett. 33, 683 (1974). 1974 PRL
11 A triaxial rotating vacuum seal R. Packard and G. A. Williams. Rev. Sci. Instr. 45, 9 (1974). 1974 Rev. Sci. Instr.
10 Extraction of images from a very low temperature cryostat using fiber optics G. A. Williams and R. Packard. Rev. Sci. Instr. 45, 1029 (1974). 1974 Rev. Sci. Instr.
09 Photographs of quantized vortex lines in rotating He II G. A. Williams and R. Packard. Phys. Rev. Lett. 33, 280 (1974). 1974 PRL
08 An upper limit to rotational cooling in superfluid helium K. DeConde and R. Packard. Phys. Lett. 47A, 233 (1974). 1974 Phys. Lett.
07 Thickness of the moving superfluid film at temperatures below 1K. A. Williams and R. Packard. Phys. Rev. Lett. 32, 587 (1974). 1974 PRL
06 An attempt to photograph the vortex lattice in rotating He II R. Packard and G. A. Williams, in  Low Temperature Physics LT 13, K. D. Timmerhaus, W. G. O'Sullivan and E. F. Hammel (eds), Plenum Publishing Corp. New York, Vol. 1, p. 311 (1972). 1972 LT
05 Observations of single vortex lines in rotating superfluid helium R. Packard and T. M. Sanders. Phys. Rev. A 6, 799 (1972). 1972 Phys. Rev. A
04 Pulsar speedups related to metastability of the superfluid neutron-star core  R. Packard. Phys. Rev. Lett. 28, 1080 (1972). 1972 PRL
03 Ultraviolet emission spectra of electron-excited solid and liquid neon F. Reif, R. Packard and C. M. Surko. Phys. Rev. Lett. 25, 1435 (1970). 1970 PRL
02 Spectroscopic study of the luminescence of liquid helium in the vacuum ultraviolet C. M. Surko, G. J. Dick, R. Packard and F. Reif.  Phys. Rev. Lett. 23,  657 (1970). 1970 PRL
01 Detection of single quantized vortex lines in rotating He II. T. M. Sanders and R. Packard. Phys. Rev. Lett. 22, 823 (1969). 1969 PRL

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Comments and questions to Richard Packard This page was updated February 2013