Design and performance of an ionisation chamber for the measurement of low alpha-activities

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• 作者：A. Hartmann^b ; J. Hutsch^b ; ¹ ; F. Krü ; ger^a ; M. Sobiella^b ; H. Wilsenach^a ; ^{heinrich.wilsenach@mailbox.tu-dresden.de" class="auth_mail" title="E-mail the corresponding author} ; K. Zuber^a
• 关键词：Frisch grid ; Ionisation chamber ; Alpha-decay
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2016
• 出版时间：1 April 2016
• 年：2016
• 卷：814
• 期：Complete
• 页码：12-18
• 全文大小：3261 K

文摘

A new ionisation chamber for alpha-spectroscopy has been built from radio-pure materials for the purpose of investigating long lived alpha-decays. The measurement makes use of pulse shape analysis to discriminate between signal and background events. The design and performance of the chamber is described in this paper. A background rate of View the MathML source" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0168900216000498&_mathId=si0009.gif&_user=111111111&_pii=S0168900216000498&_rdoc=1&_issn=01689002&md5=a617b619dd8c4f2c0cf1da1af6d0f26e">2.0-S0168900216000498-si0009.gif"> in the energy region of 1–9 MeV was achieved with a run period of 30.8 days. The background is dominantly produced by radon daughters.