TY - JOUR
T1 - Low-level gamma-ray spectrometry for analysing fusion plasma conditions
AU - Wieslander, J. S.Elisabeth
AU - Hult, Mikael
AU - Bonheure, Georges
AU - Arnold, Dirk
AU - Dombrowski, Harald
AU - Gasparro, Joël
AU - Laubenstein, Matthias
AU - Marissens, Gerd
AU - Vermaercke, Peter
PY - 2008/6/21
Y1 - 2008/6/21
N2 - 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, B4C 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.
AB - 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, B4C 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.
KW - Activation
KW - Charged particles
KW - Thermonuclear fusion
KW - Ultra low-level gamma-ray spectrometry
KW - Underground laboratory
UR - http://www.scopus.com/inward/record.url?scp=46549085301&partnerID=8YFLogxK
U2 - 10.1016/j.nima.2008.02.052
DO - 10.1016/j.nima.2008.02.052
M3 - Article
AN - SCOPUS:46549085301
SN - 0168-9002
VL - 591
SP - 383
EP - 393
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
IS - 2
ER -