Analysis of neutron energy spectra from neutral beam heated plasmas in the JET tokamak
- 1 February 1993
- journal article
- Published by IOP Publishing in Plasma Physics and Controlled Fusion
- Vol. 35 (2) , 179-191
- https://doi.org/10.1088/0741-3335/35/2/005
Abstract
Neutron energy spectra from deuterium neutral beam heated plasmas at the Joint European Torus (JET) have been measured with a time-of-flight spectrometer. The different source fractions, resulting from thermal-thermal (TT), beam-thermal (BT) and beam-beam (BB) interactions have been extracted. The measured TT fraction and associated ion temperature is checked for consistency with diagnostic data for electron density ne, effective charge Zeff, ion temperature Ti and total neutron emission. Two different ways of comparing the data are represented. Firstly, the measured TT fraction, total neutron emission, ne, Zeff and Te profile shape are used to deduce a consistent Ti, which is compared with Ti values obtained independently by other diagnostics. Secondly, the measured TT fraction, total neutron emission, ne profile shape and Ti are used to determine a consistent thermal deuterium density nD, which is compared with nD obtained from Zeff measurements.Keywords
This publication has 10 references indexed in Scilit:
- The JET neutron time-of-flight spectrometerNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1991
- Studies of D-D fusion reactivity in high temperature JET plasmasNuclear Fusion, 1991
- Charge exchange spectroscopy measurements of ion temperature and toroidal rotation in JETNuclear Fusion, 1989
- Measurement of the fractional thermonuclear neutron yield during deuterium neutral-beam injection into deuterium plasmasNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1989
- JET high resolution bent crystal spectrometerReview of Scientific Instruments, 1989
- Photoneutron production accompanying plasma disruptions in JETNuclear Fusion, 1988
- The LIDAR Thomson scattering diagnostic on JET (invited)Review of Scientific Instruments, 1988
- First results from the LIDAR Thomson Scattering System on JETNuclear Fusion, 1987
- Neutron detection techniques for plasma diagnostics at the joint european torus (JET)Radiation Effects, 1986
- Calculation of the gain factor Q in two-component plasma systemsNuclear Fusion, 1975