Low-energy spherical grating monochromator, resolution and flux comparison with normal incidence monochromator

Autor:	J. van Elp
Rok vydání:	1997
Předmět:	Physics Nuclear and High Energy Physics business.industry Photon flux Grating law.invention Low energy Optics Beamline law business Instrumentation Storage ring Monochromator
Zdroj:	Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 390:403-408
ISSN:	0168-9002
DOI:	10.1016/s0168-9002(97)00405-1
Popis:	A low-energy (7–40 eV) modified spherical-grating monochromator (SGM) layout is presented. The expected resolution and photon flux for this low-energy SGM beamline on the storage ring ASTRID are compared with an existing Normal Incidence Monochromator (NIM), namely the 5 m McPherson at the SRS in Daresbury (UK). The low-energy SGM has about a factor of 21–57 higher flux for a 0.02% bandwidth and also a better ultimate resolution. The much higher flux results from the large horizontal acceptance (40 mrad) possible at a low-energy storage ring and the expected efficiency of the grazing-incidence grating.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::13b90ab61a035f7816a27b949452f350 https://doi.org/10.1016/s0168-9002(97)00405-1 Zobrazit plný text záznamu Full Text from ScienceDirect