TY  - JOUR
AU  - Jiang, XI
AU  - Sergienko, G.
AU  - Kreter, A.
AU  - Brezinsek, S.
AU  - Linsmeier, Ch.
TI  - Reversed-slit spectroscopy method for in situ measurement of H isotopes on plasma facing material
JO  - Journal of Instrumentation
VL  - 15
IS  - 01
SN  - 1748-0221
CY  - London
PB  - Inst. of Physics
M1  - FZJ-2020-01291
SP  - C01007 - C01007
PY  - 2020
AB  - Optic spectroscopy methods are employed for plasma facing component (PFC) material diagnostics and H isotopes retention on various platforms. A common issue of those spectroscopy methods is the measurement sensitivity. Various improvement methods have been investigated. In the current work, a 'reversed-slit' method is explored, aiming to maximise signal input while retain a reasonably good line resolution. A thin metal wire with a diameter that is comparable to a normal slit width is placed in front of an open slit. By opening the slit the input of the emission light is maximised. The thin wire casts a line of shadow on the spectral image. The shadow line is used as the 'characteristic line' to identify and separate the spectral line of each H isotope. The result shows that an open slit of 3 mm width can bring an intensity increase of 20–30 times compared to a 100 μm wide normal slit without compromising the resolution.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000525449100007
DO  - DOI:10.1088/1748-0221/15/01/C01007
UR  - https://juser.fz-juelich.de/record/874192
ER  -