Neutron-induced nuclear reactions and degradation in germanium detectors

P. Leleux; F. Albernhe; V. Borrel; B. Cordier; R. Coszach; S. Crespin; J. M. Denis; P. Duhamel; P. Frabel; W. Galster; J.-S. Graulich; P. Jean; B. Kandel; J. P. Meulders; G. Tauzin; J. Vanhorenbeeck; G. Vedrenne; P. von Ballmoos

doi:10.1051/0004-6361:20031366

Special letters issue on: first science with integral

Free Access

Issue		A&A Volume 411, Number 1, November III 2003 Special letters issue on: first science with integral


Page(s)		L85 - L90
Section		Letters
DOI		https://doi.org/10.1051/0004-6361:20031366
Published online		17 November 2003

A&A 411, L85-L90 (2003)

Letter to the Editor

Neutron-induced nuclear reactions and degradation in germanium detectors

P. Leleux¹, F. Albernhe²^,3, V. Borrel²^,3, B. Cordier⁴, R. Coszach¹, S. Crespin⁵, J. M. Denis¹, P. Duhamel⁶, P. Frabel³, W. Galster¹, J.-S. Graulich¹, P. Jean³, B. Kandel³, J. P. Meulders¹, G. Tauzin⁴, J. Vanhorenbeeck⁶, G. Vedrenne³ and P. von Ballmoos³

¹ Institut de Physique Nucléaire, Université catholique de Louvain, 1348 Louvain-la-Neuve, Belgium
² Institut Universitaire de Technologie, Université Paul Sabatier, 31077 Toulouse, France
³ Centre d'Étude Spatiale des Rayonnements, Université Paul Sabatier, 31028 Toulouse, France
⁴ CEA-Saclay, DSM/DAPNIA/SAP, 91191 Gif-sur-Yvette, France
⁵ CEA-Bruyères, DAM/DPTA, 91180 Bruyères-le-Chatel, France
⁶ Institut d'Astronomie et d'Astrophysique, Université Libre de Bruxelles, 1050 Bruxelles, Belgium

Corresponding author: P. Leleux, leleux@fynu.ucl.ac.be

Received: 28 July 2003
Accepted: 4 September 2003

Abstract

We have measured cross sections of neutron-induced nuclear reactions leading to the delayed production of γ-ray lines similar to the ones of astrophysical interest. Conclusions were drawn concerning the expected background in the ²⁶Al 1809 keV line and the ⁷Be 478 keV line in SPI. The neutron-induced degradation of Ge detectors was studied vs. the neutron energy, the neutron fluence and the detector temperature. Performance recovery of the detectors was studied for different annealing temperatures. Optimum temperature and times for annealing were determined.

Key words: neutron-induced background, neutron damage

© ESO, 2003

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.