by Ghiringhelli, G, Tagliaferri, A, Braicovich, L and Brookes, NB
Abstract:
PoLIFEMo (Polarized Light Improved Flux Efficiency Monochromator) is the name of a spherical grating monochromator designed with the purpose of maximizing the photon intensity on a sample. The device is mainly conceived to improve performances of an x-ray emission spectrometer, whose limiting factor is often the counting rate. By keeping the exit slit fixed, it is possible to let a small spot size (similar to 35 mu m vertically) on a sample placed just near the exit slit, without the need of postgrating refocusing optics. No entrance slit is used because of the low beam divergence, allowing the use of a virtual source in a converging beam geometry. The tuning of the output energy is done by translating and pitching the spherical grating. The resolving power is higher than 1000 over the whole energy range (500-1500 eV). A detailed analysis of the optical performances is given, mostly in comparison with the Dragon-type monochromator, The actual realization of the device is described, together with the specific motivations and the experimental performances. PoLIFEMo has been installed on beam line ID12B at the European Synchrotron Radiation Facility since July 1996. (C) 1998 American Institute of Physics.
Reference:
A simple spherical grating by-pass monochromator dedicated to soft x-ray emission spectroscopy (Ghiringhelli, G, Tagliaferri, A, Braicovich, L and Brookes, NB), In REVIEW OF SCIENTIFIC INSTRUMENTS, AMER INST PHYSICS, volume 69, 1998.
Bibtex Entry:
@article{ ISI:000073183900009,
Author = {Ghiringhelli, G and Tagliaferri, A and Braicovich, L and Brookes, NB},
Title = {{A simple spherical grating by-pass monochromator dedicated to soft x-ray
   emission spectroscopy}},
Journal = {{REVIEW OF SCIENTIFIC INSTRUMENTS}},
Year = {{1998}},
Volume = {{69}},
Number = {{4}},
Pages = {{1610-1615}},
Month = {{APR}},
Abstract = {{PoLIFEMo (Polarized Light Improved Flux Efficiency Monochromator) is the
   name of a spherical grating monochromator designed with the purpose of
   maximizing the photon intensity on a sample. The device is mainly
   conceived to improve performances of an x-ray emission spectrometer,
   whose limiting factor is often the counting rate. By keeping the exit
   slit fixed, it is possible to let a small spot size (similar to 35 mu m
   vertically) on a sample placed just near the exit slit, without the need
   of postgrating refocusing optics. No entrance slit is used because of
   the low beam divergence, allowing the use of a virtual source in a
   converging beam geometry. The tuning of the output energy is done by
   translating and pitching the spherical grating. The resolving power is
   higher than 1000 over the whole energy range (500-1500 eV). A detailed
   analysis of the optical performances is given, mostly in comparison with
   the Dragon-type monochromator, The actual realization of the device is
   described, together with the specific motivations and the experimental
   performances. PoLIFEMo has been installed on beam line ID12B at the
   European Synchrotron Radiation Facility since July 1996. (C) 1998
   American Institute of Physics.}},
Publisher = {{AMER INST PHYSICS}},
Address = {{CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999
   USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Ghiringhelli, G (Corresponding Author), ESRF, BP220, F-38043 Grenoble, France.
   INFM, I-20133 Milan, Italy.
   Politecn Milan, Dipartimento Fis, I-20133 Milan, Italy.
   ESRF, F-38043 Grenoble, France.}},
DOI = {{10.1063/1.1148817}},
ISSN = {{0034-6748}},
Keywords-Plus = {{MAGNETIC CIRCULAR-DICHROISM; SYNCHROTRON-RADIATION; RESONANT
   PHOTOEMISSION; DESIGN; FLUORESCENCE; SHADOW; PROBE; IRON}},
Research-Areas = {{Instruments & Instrumentation; Physics}},
Web-of-Science-Categories  = {{Instruments & Instrumentation; Physics, Applied}},
Author-Email = {{ghiring@esrf.fr}},
ResearcherID-Numbers = {{Tagliaferri, Alberto/L-2903-2015
   Brookes, Nicholas B/C-6718-2019
   Ghiringhelli, Giacomo/D-1159-2014
   }},
ORCID-Numbers = {{Tagliaferri, Alberto/0000-0001-8001-1786
   Brookes, Nicholas B/0000-0002-1342-9530
   Ghiringhelli, Giacomo/0000-0003-0867-7748
   Braicovich, Lucio/0000-0001-6548-9140}},
Number-of-Cited-References = {{32}},
Times-Cited = {{34}},
Usage-Count-Last-180-days = {{0}},
Usage-Count-Since-2013 = {{8}},
Journal-ISO = {{Rev. Sci. Instrum.}},
Doc-Delivery-Number = {{ZJ144}},
Unique-ID = {{ISI:000073183900009}},
DA = {{2020-12-22}},
}

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