In:
Review of Scientific Instruments, AIP Publishing, Vol. 61, No. 10 ( 1990-10-01), p. 2789-2791
Abstract:
The reflective properties of a flat Mo/Si multilayer mirror (MLM) optimized for the 230 Å & lt;λ & lt;304 Å range (2d=373.2 Å, N=25, 25 Å & lt;Δλ & lt;50 Å) have been measured. A near-normal incidence spectrometer using the MLM as the dispersive element, a beryllium foil as a light blocking filter, and a channel electron multiplier as the photodetector has been built. The interest in such a device is related to its possible application as a monitor of alpha particles by imaging the whole plasma using the Lyman series of He ii. In the laboratory experiment described here, the Lyman series of He ii, emitted from a Penning ionization discharge, were scanned with a θ-2θ goniometer. In parallel, high-resolution (Δλ≊1 Å) spectra were also recorded using a 1 m grazing incidence (GI) spectrometer. Comparisons are made between the high-resolution (GI) spectrum modeled to the bandpass of the MLM and the low-resolution (MLM) spectrum in the range of interest.
Type of Medium:
Online Resource
ISSN:
0034-6748
,
1089-7623
Language:
English
Publisher:
AIP Publishing
Publication Date:
1990
detail.hit.zdb_id:
209865-9
detail.hit.zdb_id:
1472905-2
SSG:
11
