Performance of the vacuum ultraviolet high-resolution and high-flux beamline for chemical dynamics studies at the Advanced Light Source

Journal Article · Thu May 01 00:00:00 EDT 1997 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.1148082· OSTI ID:496908

Heimann, P A ^[1]; Koike, M ^[2]; Hsu, C W; Blank, D; Yang, X M; Suits, A G; Lee, Y T ^[3]; Evans, M; Ng, C Y ^[4]; Flaim, C; Padmore, H A ^[5]

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1. Advanced Light Source, Accelarator and Fusion Research Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
2. Center for X-Ray Optics, Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
3. Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
4. Department of Chemistry, Iowa State University, Ames, Iowa 50011 (United States)
5. Advanced Light Source, Accelerator and Fusion Research Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)

At the Advanced Light Source an undulator beamline, with an energy range from 6 to 30 eV, has been constructed for chemical dynamics experiments. The higher harmonics of the undulator are suppressed by a novel, windowless gas filter. In one branchline high-flux, 2{percent} bandwidth radiation is directed toward an end station for photodissociation and crossed molecular-beam experiments. A photon flux of 10{sup 16}photon/s has been measured at this end station. In a second branchline a 6.65 m off-plane Eagle monochromator delivers narrow bandwidth radiation to an end station for photoionoization studies. At this second end station a peak flux of 3{times}10{sup 11} was observed for 25000 resolving power. This monochromator has achieved a resolving power of 70000 using a 4800 grooves/mm grating, one of the highest resolving powers obtained by a vacuum ultraviolet monochromator. {copyright} {ital 1997 American Institute of Physics.}

• Research Organization: Lawrence Berkeley National Laboratory
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 496908
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 5 Vol. 68; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
CHEMISTRY
DESIGN
DISSOCIATION
DYNAMICS
EXTREME ULTRAVIOLET RADIATION
HARMONICS
LIGHT SOURCES
MOLECULAR BEAMS
MONOCHROMATORS
PERFORMANCE
PHOTON-MOLECULE COLLISIONS
SYNCHROTRON RADIATION