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Title: Phoswich detectors with DSP analysis for low-energy, low-activity photon measurements

Abstract

Several new phoswich detector designs coupled with digital pulse shape discrimination systems are under development for a variety of radiological measurements. Herein the authors report on two detectors for measuring small activities (nanocurie amounts) of low photon energy (30 to 150 keV) from either isotopic decay or beta-produced bremsstrahlung radiation. The lower limit of detection (LLD), assuming a 60-s counting time, for a phoswich well detector is 0.7 Bq (0.02 nCi) of gamma activity in the 20- to 100-keV range and 11 Bq (0.3 nCi) and 550 (15 nCi) for gamma rays and beta bremsstrahlung X rays, respectively. It is envisioned that these detectors would be useful for biomedical applications or for other measurements requiring low-level, low-energy photon measurement.

Authors:
; ;  [1]
  1. Univ. of Missouri, Columbia, MO (United States)
Publication Date:
OSTI Identifier:
678109
Report Number(s):
CONF-990605-
Journal ID: TANSAO; ISSN 0003-018X; TRN: 99:009094
Resource Type:
Journal Article
Journal Name:
Transactions of the American Nuclear Society
Additional Journal Information:
Journal Volume: 80; Conference: 1999 annual meeting of the American Nuclear Society (ANS), Boston, MA (United States), 6-10 Jun 1999; Other Information: PBD: 1999
Country of Publication:
United States
Language:
English
Subject:
44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; SCINTILLATION COUNTERS; DIGITAL SYSTEMS; PULSE DISCRIMINATORS; GAMMA DETECTION; X-RAY DETECTION; ACTIVITY LEVELS

Citation Formats

Pillai, S., Feng, J., and Miller, W.H. Phoswich detectors with DSP analysis for low-energy, low-activity photon measurements. United States: N. p., 1999. Web.
Pillai, S., Feng, J., & Miller, W.H. Phoswich detectors with DSP analysis for low-energy, low-activity photon measurements. United States.
Pillai, S., Feng, J., and Miller, W.H. Wed . "Phoswich detectors with DSP analysis for low-energy, low-activity photon measurements". United States.
@article{osti_678109,
title = {Phoswich detectors with DSP analysis for low-energy, low-activity photon measurements},
author = {Pillai, S. and Feng, J. and Miller, W.H.},
abstractNote = {Several new phoswich detector designs coupled with digital pulse shape discrimination systems are under development for a variety of radiological measurements. Herein the authors report on two detectors for measuring small activities (nanocurie amounts) of low photon energy (30 to 150 keV) from either isotopic decay or beta-produced bremsstrahlung radiation. The lower limit of detection (LLD), assuming a 60-s counting time, for a phoswich well detector is 0.7 Bq (0.02 nCi) of gamma activity in the 20- to 100-keV range and 11 Bq (0.3 nCi) and 550 (15 nCi) for gamma rays and beta bremsstrahlung X rays, respectively. It is envisioned that these detectors would be useful for biomedical applications or for other measurements requiring low-level, low-energy photon measurement.},
doi = {},
journal = {Transactions of the American Nuclear Society},
number = ,
volume = 80,
place = {United States},
year = {1999},
month = {9}
}