نتایج جستجو برای: monochromator

تعداد نتایج: 883  

Journal: :Journal of the Spectroscopical Society of Japan 1979

Journal: :Atmospheric Measurement Techniques 2023

Abstract. This study presents a new total column ozone (TCO) retrieval from the Koherent system, developed at Physikalisch-Meteorologisches Observatorium Davos, World Radiation Center (PMOD/WRC). The instrument is based on small, cost-effective, robust, low-maintenance and state-of-the-art-technology array spectroradiometer. It consists of BTS-2048-UV-S-F spectroradiometer Gigahertz-Optik GmbH,...

2016
Torsten Kachel Frank Eggenstein Rolf Follath

We describe a new but yet well proven way of making elliptically polarized dipole radiation from the BESSY II storage ring applicable to the SX700-type collimated plane grating monochromator PM3. We show that due to the limited vertical acceptance of the grating a simple use of vertical apertures is not possible in this case. Rather, deflecting the beam upor downwards by rotating the vertically...

2000
Paolo Scardi Mark Bourke David Dunand Ersan Ustundag Lachlan M. D. Cranswick

SPODI, the Structure POwder DIffractometer, will be installed on beamline SR 8 at the FRM II in Garching. The instrument has been designed to achieve an ideal compromise of good-resolution up to very high 2θ (by using a monochromator take-off angle of 155°) and highflux with special emphasis on ‘good’ profile shapes and low background. To optimise the parameters of the optical components like c...

2010
William R. Lloyd Robert H. Wilson Ching-Wei Chang Gregory D. Gillispie Mary-Ann Mycek

A fiber-optic system was developed to rapidly acquire tissue fluorescence wavelength-time matrices (WTMs) with high signal-to-noise ratio (SNR). The essential system components (473 nm microchip laser operating at 3 kHz repetition frequency, fiber-probe assemblies, emission monochromator, photomultiplier tube, and digitizer) were assembled into a compact and clinically-compatible unit. Data wer...

2006
U. Flechsig R. Abela R. Betemps H. Blumer K. Frank A. Jaggi A. A. MacDowell H. A. Padmore V. Schönherr J. Ulrich H. Walther S. Zelenika C. Zumbach

A multipurpose beamline for tests and developments in the field of x-ray optics and synchrotron radiation instrumentation in general is under construction at the Swiss Light Source (SLS) bending magnet X05DA. The beamline uses a newly developed UHV compatible, 100 μm thick, brazed CVD diamond vacuum window. The very compact cryogenically cooled channel cut Si(111) monochromator and bendable 1:1...

2004
Silvia Viciani Alessandro Zavatta Marco Bellini

We present an experimental and theoretical analysis of the energy-time entanglement properties of a twophoton state generated by pulsed spontaneous parametric down-conversion. Different methods of spectral or temporal shaping of one of the two photons have allowed the observation of nonlocal modulations in the autocorrelation or in the spectrum of the other, by coincidence measurements. Either ...

Journal: :Journal of molecular spectroscopy 1999
Chen Li Lazarov Wang Lyyra Huennekens Field

The relative intensities of rotational lines in resolved fluorescence spectra are dependent on the detection direction and the choice of the detection scheme when a grating monochromator is used. These differences arise from the spatially anisotropic distribution of the fluorescence, the rotational branch dependence of the fluorescence polarization, and the polarization dependence of the monoch...

2015
T. S. Toellner J. Collins K. Goetze M. Y. Hu C. Preissner E. Trakhtenberg L. Yan

A high-resolution silicon monochromator suitable for 21.541 keV synchrotron radiation is presented that produces a bandwidth of 0.27 meV. The operating energy corresponds to a nuclear transition in (151)Eu. The first-of-its-kind, fully cryogenic design achieves an energy-alignment stability of 0.017 meV r.m.s. per day, or a 100-fold improvement over other meV-monochromators, and can tolerate hi...

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