MEASUREMENT OF IONIZATION AND PHONON PRODUCTION BY NUCLEAR RECOILS IN A 60 G CRYSTAL OF GERMANIUM AT 25 MK

被引：110

作者：

SHUTT, T

ELLMAN, B

BARNES, PD

CUMMINGS, A

DASILVA, A

EMES, J

GIRAUDHERAUD, Y

HALLER, EE

LANGE, AE

ROSS, RR

RICH, J

SADOULET, B

SMITH, G

STOCKWELL, W

STUBBS, C

WANG, N

WHITE, S

YOUNG, BA

YVON, D

机构：

[1] UNIV CALIF BERKELEY, DEPT PHYS, BERKELEY, CA 94720 USA

[2] UNIV CALIF BERKELEY, DEPT MAT SCI & MINERAL ENGN, BERKELEY, CA 94720 USA

[3] LAWRENCE BERKELEY LAB, BERKELEY, CA 94720 USA

[4] UNIV CALIF SANTA BARBARA, DEPT PHYS, SANTA BARBARA, CA 93106 USA

[5] CENS, SERV PHYS PARTICULES, DEPT ASTROPHYS, F-91191 GIF SUR YVETTE, FRANCE

[6] UNIV BRITISH COLUMBIA, DEPT PHYS, VANCOUVER V6T 1Z1, BC, CANADA

[7] COLL FRANCE, PHYS CORPUSCULAIRE LAB, F-75231 PARIS, FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.69.3425

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the first measurement of the absolute phonon energy and the amount of ionization produced by the recoil of nuclei and electrons in a 60 g germanium crystal at a temperature of almost-equal-to 25 mK. We find good agreement between our results and previous measurements of ionization yield from nuclear recoils in germanium. Our device achieves 10:1 discrimination between neutrons and photons in the few keV energy range, demonstrating the feasibility of this technique for large reductions of background in searches for direct interactions of weakly interacting massive particle dark matter.

引用

页码：3425 / 3427

页数：3

共 14 条

[1] BAND-GAP EFFECTS IN STOPPING OF GE72 ATOMS IN GERMANIUM [J].

CHASMAN, C ;

JONES, KW ;

KRANER, HW ;

BRANDT, W .

PHYSICAL REVIEW LETTERS, 1968, 21 (20) :1430-&

[2] PERFORMANCE OF A 60-GRAM CRYOGENIC GERMANIUM DETECTOR [J].

CUMMINGS, A ;

WANG, N ;

SHUTT, T ;

BARNES, P ;

EMES, J ;

GIRAUDHERAUD, Y ;

HALLER, EE ;

LANGE, A ;

RICH, J ;

ROSS, R ;

SADOULET, B ;

SMITH, G ;

STUBBS, C .

IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 1991, 38 (02) :226-230

[3] MEASUREMENTS OF IONIZATION PRODUCED IN SILICON-CRYSTALS BY LOW-ENERGY SILICON ATOMS [J].

DOUGHERTY, BL .

PHYSICAL REVIEW A, 1992, 45 (03) :2104-2107

[4] MEASUREMENT OF THE IONIZATION OF SLOW SILICON NUCLEI IN SILICON FOR THE CALIBRATION OF A SILICON DARK-MATTER DETECTOR [J].

GERBIER, G ;

LESQUOY, E ;

RICH, J ;

SPIRO, M ;

TAO, C ;

YVON, D ;

ZYLBERAJCH, S ;

DELBOURGO, P ;

HAOUAT, G ;

HUMEAU, C ;

GOULDING, F ;

LANDIS, D ;

MADDEN, N ;

SMITH, A ;

WALTON, J ;

CALDWELL, DO ;

MAGNUSSON, B ;

WITHERELL, M ;

SADOULET, B ;

DASILVA, A .

PHYSICAL REVIEW D, 1990, 42 (09) :3211-3214

[5] DETECTABILITY OF CERTAIN DARK-MATTER CANDIDATES [J].

GOODMAN, MW ;

WITTEN, E .

PHYSICAL REVIEW D, 1985, 31 (12) :3059-3063

[6]

GRIEST K, COMMUNICATION

[7] SEMICONDUCTOR PARTICLE DETECTORS - A REASSESSMENT OF FANO FACTOR SITUATION [J].

KLEIN, CA .

IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 1968, NS15 (03) :214-+

[8]

Lindhard J., 1963, MAT FYS MEDD K DAN V, V33, P10

[9]

PRIMACK JR, 1988, ANNU REV NUCL PART S, V38, P751

[10]

SADOULET B, 1987, 13TH P TEX S REL AST, P260

← 1 2 →