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Title: A Novel Low Background Cryogenic Detector for Radon in Gas

Abstract

A prototype of a new detector for measurements of radon in gases and radon emanation investigations is presented. It is based on the low-temperature collection of 222Rn on a stainless steel plate and the following counting of emitted alpha particles using a standard ORTEC semiconductor detector for alpha spectroscopy. A low background of the constructed system was achieved, in the order of 25 counts per day for the 222Rn energy window. Relatively high detection efficiency of 32% in 2{pi} geometry, and large volume of the detector allow radon concentration measurements at the level of 12 mBq/m3 with a 30% accuracy. The detector can be also used to measure short-lived 220Rn. In the next step we plan to improve the system so that we could reach the sensitivity of 1 mBq/m3. This can be achieved by reducing the background, improving the detection efficiency and/or increasing the active volume of the detector (with respect to the prototype)

Authors:
 [1];  [2]
  1. Marian Smoluchowski Institute of Physics, Reymonta 4, 30-059 Cracow (Poland)
  2. Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117 Heidelberg (Germany)
Publication Date:
OSTI Identifier:
21055025
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 897; Journal Issue: 1; Conference: LRT 2006: Topical workshop on low radioactivity techniques, Aussois (France), 1-4 Oct 2006; Other Information: DOI: 10.1063/1.2722066; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ALPHA DETECTION; ALPHA PARTICLES; ALPHA SPECTROSCOPY; CRYOGENICS; EFFICIENCY; ION EMISSION; RADON; RADON 220; RADON 222; SEMICONDUCTOR DETECTORS; SEMICONDUCTOR DEVICES; SENSITIVITY; STAINLESS STEELS

Citation Formats

Wojcik, Marcin, and Zuzel, Grzegorz. A Novel Low Background Cryogenic Detector for Radon in Gas. United States: N. p., 2007. Web. doi:10.1063/1.2722066.
Wojcik, Marcin, & Zuzel, Grzegorz. A Novel Low Background Cryogenic Detector for Radon in Gas. United States. doi:10.1063/1.2722066.
Wojcik, Marcin, and Zuzel, Grzegorz. Wed . "A Novel Low Background Cryogenic Detector for Radon in Gas". United States. doi:10.1063/1.2722066.
@article{osti_21055025,
title = {A Novel Low Background Cryogenic Detector for Radon in Gas},
author = {Wojcik, Marcin and Zuzel, Grzegorz},
abstractNote = {A prototype of a new detector for measurements of radon in gases and radon emanation investigations is presented. It is based on the low-temperature collection of 222Rn on a stainless steel plate and the following counting of emitted alpha particles using a standard ORTEC semiconductor detector for alpha spectroscopy. A low background of the constructed system was achieved, in the order of 25 counts per day for the 222Rn energy window. Relatively high detection efficiency of 32% in 2{pi} geometry, and large volume of the detector allow radon concentration measurements at the level of 12 mBq/m3 with a 30% accuracy. The detector can be also used to measure short-lived 220Rn. In the next step we plan to improve the system so that we could reach the sensitivity of 1 mBq/m3. This can be achieved by reducing the background, improving the detection efficiency and/or increasing the active volume of the detector (with respect to the prototype)},
doi = {10.1063/1.2722066},
journal = {AIP Conference Proceedings},
number = 1,
volume = 897,
place = {United States},
year = {Wed Mar 28 00:00:00 EDT 2007},
month = {Wed Mar 28 00:00:00 EDT 2007}
}