Zobrazeno 1 - 10
of 21
pro vyhledávání: '"L. R. Hughey"'
Publikováno v:
The Journal of Chemical Physics. 103:3912-3916
A zero ion kinetic energy spectrometer has been developed to study the production of near zero energy protons and deuterons from dissociative photoionization of H2 and D2. Both H+ and D+ spectra show four peaks on top of a continuum. The continuum wa
Autor:
Hailemichael M. Seyoum, L. R. Hughey, Harry D. Morgan, David C. Humm, Araya Asfaw, John D.E. Fortna, Mitchell L. Furst
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 347:287-290
The Very High Resolution Spectrometer at the Synchrotron Ultraviolet Radiation Facility of the National Institute of Standards and Technology has been upgraded with improved beamline throughput, instrument control and data acquisition. Since this upg
Autor:
L. R. Hughey
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 347:294-298
This paper describes the new optical and vacuum systems designed for coupling the SURF II high-throughput 2-m normal-incidence monochromator to the SURF II storage ring at the National Institute of Standards and Technology. This new system preserves
Autor:
L. R. Hughey
Publikováno v:
Proceedings of the 1989 IEEE Particle Accelerator Conference, . 'Accelerator Science and Technology.
SURF-II is a 300-MeV, single-magnet, weak-focusing, circular storage ring. It is dedicated to the production of VUV (vacuum ultraviolet) and soft X-ray radiation for research and for absolute radiometry. The injector is a 10-MeV microtron. A single o
Autor:
D. Wahl, Ping-Shine Shaw, Robert E. Vest, Phillip E. Robl, L. R. Hughey, Rossie M. Graves, David E. Eisert, Lee Greenler, A. D. Hamilton, W. S. Trzeciak, R. P. Madden, R.A. Bosch, Mitchell L. Furst
Publikováno v:
AIP Conference Proceedings.
The National Institute of Standards and Technology (NIST), formerly the National Bureau of Standards (NBS), has operated the Synchrotron Ultraviolet Radiation Facility (SURF), based on an electron accelerator, continuously since the early 1960s. SURF
Autor:
A. D. Hamilton, Uwe Arp, Gilles P. Cauchon, L. R. Hughey, Mitchell L. Furst, Rossie M. Graves, Thomas B. Lucatorto, Charles S. Tarrio
Publikováno v:
AIP Conference Proceedings.
The conversion of the electron storage ring at NIST (the National Institute of Standards and Technology) to SURF III (the Synchrotron Ultraviolet Radiation Facility) has resulted in a significant improvement to the azimuthal uniformity of the magneti
Autor:
R. P. Madden, Robert E. Vest, A. D. Hamilton, Rossie M. Graves, Thomas B. Lucatorto, L. R. Hughey, Mitchell L. Furst, L. R. Canfield
Publikováno v:
SPIE Proceedings.
The National Institute of Standards and Technology (NIST) serves the growing ultraviolet user community by providing calibration services throughout the spectral range from 2 nm to 400 nm. In this paper we describe the far ultraviolet transfer standa
Autor:
A. D. Hamilton, L. R. Hughey, Thomas R. O’Brian, R. P. Madden, J. E. Proctor, Mitchell L. Furst
Publikováno v:
Review of Scientific Instruments. 67:3345-3346
The Synchrotron Ultraviolet Radiation Facility (SURF II) at the National Institute of Standards and Technology, Gaithersburg, MD, USA, has served as a primary radiometric standard in the vacuum ultraviolet region since its conversion from a synchrotr
Publikováno v:
Review of Scientific Instruments. 63:1594-1595
This facility report describes the Synchrotron Ultraviolet Radiation Facility (SURF II) operated by the National Institute of Standards and Technology, Gaithersburg, Maryland. SURF II is a 300‐MeV electron storage ring which provides well character
Publikováno v:
Metrologia. 19:131-136
A method of determining the absolute beam current in the NBS electron storage ring SURF-II by electron counting is described. Recent improvements and the present implementation of the technique are discussed, along with the results of an intercompari