Preliminary results on the performance of a TeO2 thermal detector in a search for direct interactions of WIMPs

被引：34

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 | 1996年 / 384卷 / 1-4期

关键词：

D O I：

10.1016/0370-2693(96)00573-4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

During a Double Beta Decay experiment performed at Laboratori Nazionali del Gran Sasso, a 1548 hours background spectrum was collected with a 340 g TeO2 thermal detector. An analysis of this spectrum has been carried out To search for possible WIMP signals. The values for parameters which are essential in the search for WIMPs, like energy resolution (2 keV), energy threshold (13 keV) and nuclear recoil quenching factor (greater than or equal to 0.93) have been experimentally determined and are discussed in detail. The spectrum of recoils induced by alpha decays has been directly observed for the first time in coincidence with the cu particle pulse. Preliminary limits on the spin-independent cross sections of WIMPs on Te and O nuclei have been obtained.

引用

页码：316 / 322

页数：7

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