Low-level gamma-ray spectrometry for analysing fusion plasma conditions

A new method, combining activation by neutrons and charged particles with ultra low-level gamma-ray spectrometry, aimed at obtaining a better understanding and more adequate measurements of MeV particle leaks in magnetic fusion devices was studied here. A total of 36 samples containing Ti, LiF, B 4C...

Full description

Saved in:
Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2008-06, Vol.591 (2), p.383-393
Main Authors: Wieslander, J.S. Elisabeth, Hult, Mikael, Bonheure, Georges, Arnold, Dirk, Dombrowski, Harald, Gasparro, Joël, Laubenstein, Matthias, Marissens, Gerd, Vermaercke, Peter
Format: Article
Language:English
Subjects:
Activation
Charged particles
Thermonuclear fusion
Ultra low-level gamma-ray spectrometry
Underground laboratory
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A new method, combining activation by neutrons and charged particles with ultra low-level gamma-ray spectrometry, aimed at obtaining a better understanding and more adequate measurements of MeV particle leaks in magnetic fusion devices was studied here. A total of 36 samples containing Ti, LiF, B 4C and W were placed in a boron-nitride holder mounted on the ceiling of the JET Tokamak. The samples were activated by 63 pulses from a D– 3He plasma and were later measured using underground gamma-ray spectrometry. The radionuclides 7Be, 46Sc, 54Mn, 56Co, 57Co, 58Co, 124Sb, 181Hf, 182Ta, 181W and 185W were detected in several of the samples, with very low levels of activity of 47Sc and 48V found in a few of the samples. The various production channels for the radionuclides in question are discussed.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2008.02.052