The thermal detection efficiency for recoils induced by low energy nuclear reactions, neutrinos or weakly interacting massive particles

被引：50

作者：

Alessandrello, A

Brofferio, C

Camin, DV

Caspani, P

Colling, P

Cremonesi, O

Fiorini, E

Giuliani, A

Nucciotti, A

Pavan, M

Pessina, G

Previtali, E

Zanotti, L

Bucci, C

机构：

[1] IST NAZL FIS NUCL, I-20133 MILAN, ITALY

[2] LAB NAZL GRAN SASSO, I-67010 ASSERGI, LAQUILA, ITALY

来源：

PHYSICS LETTERS B | 1997年 / 408卷 / 1-4期

关键词：

D O I：

10.1016/S0370-2693(97)00765-X

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the first direct measurements on the energy dependence of the thermal detection efficiency for heavy recoiling nuclei. Two bolometers made by TeO2 crystals facing each other were operated at low temperature and read-out independentIy, while coincidence-anticoincidence techniques were used for particle discrimination. The experiment was carried out underground after implantation of both crystals with a source of Ra-228. The relative response for alpha particles and nuclear recoils with respect to electrons of the same energy (Quenching Factor) was found to be compatible with or slightly larger than unity. Deviations from constancy with energy of the QF for nuclear recoils in alpha decays of Ra-224, Rn-220, Po-216, Po-212 and Bi-212 Were not observed. (C) 1997 Elsevier Science B.V.

引用

页码：465 / 468

页数：4

共 27 条

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