Neutron-induced nuclear reactions and degradation in germanium detectors

Free access article

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		http://dx.doi.org/10.1051/0004-6361:20031366

A&A 411, L85-L90 (2003)
DOI: 10.1051/0004-6361:20031366

Letter

Neutron-induced nuclear reactions and degradation in germanium detectors

P. Leleux¹, F. Albernhe^{2, 3}, V. Borrel^{2, 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

(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 $\gamma$ -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

Offprint request: P. Leleux, leleux@fynu.ucl.ac.be

SIMBAD Objects

What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access. An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.

If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
You can define your own OpenURL resolver with your EDPS Account. In this case your choice will be given priority over that of your library.
You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.