Search Results - (Author, Cooperation:B. Bowler)
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1Latest Papers from Table of Contents or Articles in PressK. R. Arrigo ; D. K. Perovich ; R. S. Pickart ; Z. W. Brown ; G. L. van Dijken ; K. E. Lowry ; M. M. Mills ; M. A. Palmer ; W. M. Balch ; F. Bahr ; N. R. Bates ; C. Benitez-Nelson ; B. Bowler ; E. Brownlee ; J. K. Ehn ; K. E. Frey ; R. Garley ; S. R. Laney ; L. Lubelczyk ; J. Mathis ; A. Matsuoka ; B. G. Mitchell ; G. W. Moore ; E. Ortega-Retuerta ; S. Pal ; C. M. Polashenski ; R. A. Reynolds ; B. Schieber ; H. M. Sosik ; M. Stephens ; J. H. Swift
American Association for the Advancement of Science (AAAS)
Published 2012Staff ViewPublication Date: 2012-06-09Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Arctic Regions ; Biomass ; Diatoms/growth & development ; *Eutrophication ; *Ice Cover ; Light ; Nitrates/analysis ; Oceans and Seas ; Photosynthesis ; Photosystem II Protein Complex/analysis ; Phytoplankton/*growth & development ; Seawater/chemistryPublished by: -
2Articles: DFG German National LicensesSurman, M. ; Cragg-Hine, I. ; Singh, J. ; Bowler, B. J. ; Padmore, H. A. ; Norman, D. ; Johnson, A. L. ; Walter, W. K. ; King, D. A. ; Davis, R. ; Purcell, K. G. ; Thornton, G.
[S.l.] : American Institute of Physics (AIP)
Published 1992Staff ViewISSN: 1089-7623Source: AIP Digital ArchiveTopics: PhysicsElectrical Engineering, Measurement and Control TechnologyNotes: A vertically dispersing high-energy spherical grating monochromator (HESGM) has been installed on the synchrotron radiation source (SRS) at the Daresbury Laboratory. The instrument has no entrance slit and provides a high intensity source of x rays of energy 250–1400 eV focused into a small spot suitable for surface spectroscopy. Photoabsorption features of 240 meV have been resolved, but the resolution of the instrument is dependent on the SRS stored beam current. The degree of linear polarization has been measured at the carbon K edge to be 0.80.Type of Medium: Electronic ResourceURL: -
3Articles: DFG German National LicensesSurman, M. ; Cragg-Hine, I. ; Singh, J. ; Bowler, B. ; Padmore, H. A. ; Norman, D. ; Johnson, A. L. ; Atrei, A. ; Walter, W. K. ; King, D. A. ; Davis, R. ; Purcell, K. G. ; Thornton, G.
[S.l.] : American Institute of Physics (AIP)
Published 1992Staff ViewISSN: 1089-7623Source: AIP Digital ArchiveTopics: PhysicsElectrical Engineering, Measurement and Control TechnologyNotes: In this article we report the characteristics of the new High Energy Spherical Grating Monochromator beam line on the SRS. The instrument, which has no entrance slit, was designed to provide high photon flux with small spot size, in the energy range covering the 1s binding energies of carbon, nitrogen, oxygen, and fluorine. Radiation from a bending magnet is horizontally focused onto the exit slit by a long, Pt-coated meridian cylinder (R=299 m, 2 mrad horiz. aperture, 2° glancing angle). The light is vertically diffracted and focused by one of three interchangeable spherical gratings (1050, 1500, and 1800 lines mm−1) operating in negative order. Finally, the light is refocused by an ellipsoidal mirror. The photon flux, determined with copper and carbon photocathodes, is presented for the three gratings. Useful flux is obtained in the range 250–1200 eV, with intensity maxima for each grating at 600, 700, and 800 eV of 11, 9, and 5×1010 photons s−1 per 100-mA stored beam into a band pass of 0.05%. The influence of contaminants which are present on the optical elements is discussed, together with details of beam line operating conditions which minimize the build up of such contaminants. Photoabsorption and photoemission measurements indicate a high (up to 30%) second order and some third order light content. Resolution determinations obtained from photoabsorption measurements are presented. Although features as narrow as 250 meV have been resolved, the resolving power of the instrument is found to depend strongly on stored beam current. We suggest this may be due to electron beam (i.e., source) blow-up. We critically discuss the suitability of the new facility for surface EXAFS of low Z adsorbates, in particular above the carbon, nitrogen, and oxygen 1s edges, using examples from recent studies which have been undertaken on the beamline.Type of Medium: Electronic ResourceURL: -
4Articles: DFG German National LicensesLarter, S. R. ; Bowler, B. F. J. ; Li, M. ; Chen, M. ; Brincat, D. ; Bennett, B. ; Noke, K. ; Donohoe, P. ; Simmons, D. ; Kohnen, M. ; Allan, J. ; Telnaes, N. ; Horstad, I.
[s.l.] : Nature Publishing Group
Published 1996Staff ViewISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] The ability to determine the distance migrated by an oil from source rock to reservoir could greatly assist in the identification of new, economically viable accumulations of petroleum. Non-alkylated benzocarbazoles, which are present in trace quantities in oils, exhibit changes in both ...Type of Medium: Electronic ResourceURL: -
5Articles: DFG German National LicensesStaff View
ISSN: 0022-3697Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyPhysicsType of Medium: Electronic ResourceURL: