Un Monochromateur à Reseau Concave en Incidence Tangentielle Pour L'ultraviolet Lointain

Romand, Jacques-André; Vodar, B.

doi:10.1080/713826432

Cited by 18 publications

(2 citation statements)

References 11 publications

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“…A gold coated, 2 m radius concave grating with 600 lines/mm and a blaze angle of 2"20' were used for all the measurements. Thescanning mechanism of the grating spectrometer is of Romand-Vodar type [15], with a constant angle of diffraction 2'40' and thegrating-slit distance 93.6 mm. Thegratingspectrometer comprises three interchangeable concave pre-reflectors and the so-called "crossed mirror-grating optical system" [16] to discriminate unwanted short-wavelength radiation and to increase the X-ray collection efficiency from the microprobe source, respectively.…”

Section: Methodsmentioning

confidence: 99%

Soft X‐Ray Emission Spectra from Some NiAl Alloys

Maslenkov

Kozlenkov

Филин

et al. 1984

Physica Status Solidi (b)

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A new effective method of electron microprobe yrating spectroscopy is applied to the experimental investigation of the A1 L2.3 (+Ni M2,3) emission band of some nickel-aluminium alloys. The compositional (or structural) changes in the spectra are compared with the theoretical band structure and X-ray intensity calculations. The observed variations in the spectrum profile may be attributed to the charge transfer between the component atoms and the hybridization of s and d electronic states in the valence band.

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Section: Methodsmentioning

confidence: 99%

Soft X‐Ray Emission Spectra from Some NiAl Alloys

Maslenkov

Kozlenkov

Филин

et al. 1984

Physica Status Solidi (b)

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“…5-7 A calibrated 3 m grazing incidence spectrometer-type Romand Vodar equipped with a channel plate detector was used in oxygen and helium mixture plasmas. 7,8 A high speed rotated mirror monochromator was designed for the spatially resolved development of the spectrograph. 9 In order to improve temporal resolving, a spectrograph that used a multianode detector was developed.…”

Section: Introductionmentioning

confidence: 99%

Absolute calibration of space- and time-resolving flat-field vacuum ultraviolet spectrograph under both P and S polarized light conditions for plasma diagnostics

Okamoto

Yoshikawa

Yamaguchi

et al. 2001

Review of Scientific Instruments

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Measurement of spectra in the wavelength range from vacuum ultraviolet (VUV) to soft x ray is an important means to diagnose impurity behavior in magnetically confined plasmas used in fusion plasmas. Recently, a space- and time-resolving flat-field grazing-incidence VUV spectrograph was constructed for the simultaneous observation of spatial, temporal, and spectral distributions of plasma radiation in the wavelength range of 150–1050 Å. Absolute calibration experiments were performed at beamline 11C and beamline 12A in the Photon Factory at the High Energy Acceleration Research Organization. The absolute sensitivity of the VUV spectrograph was measured under both P and S polarized light conditions.

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Optical Anisotropy of MgF, in Its UV Absorption Region

Thomas

Stéphan

Lemonnier

et al. 1973

Physica Status Solidi (b)

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Reflectance measurements are used t o calculate the ordinary and extraordinary optical constants of an anisotropic MgFz crystal in the energy range 11 to 28 eV. Partially linearly polarized light is used and a method of least squares is employed to compute the results.An excitonic splitting of 0.5 eV is observed at the r point. The anisotropy of the forbidden gap is 0.2 eV while that of plasmon is 0.3 eV. A tentative interpretation is given based upon a symmetry group analysis a t the r point.Reflexionsmessungen werden zur Berechnung der ordentlichen und auBerordentlichen optischen Konstanten eines anisotropen MgF,-Kristalls im Energiebereich von 11 bis 28 eV benutet. Es wird tcilweise linear-polarisiertes Licht verwendet und eine Methode der kleinsten Quadrate zur Berechnung der Ergebnisse herangezogen. Am r -P u n k t wird eine exzitonische Aufspaltung von 0,5 eV beobachtet. Die Anisotropie der verbotenen Zone betragt 0,2 eV wahrend die des Plasmons 0,3 eV betragt. Es wird eine mogliche Erklarung angegeben, die auf einer Symmetriegruppenanalyqe am I'-Punkt beruht.

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Un Monochromateur à Reseau Concave en Incidence Tangentielle Pour L'ultraviolet Lointain

Cited by 18 publications

References 11 publications

Soft X‐Ray Emission Spectra from Some NiAl Alloys

Soft X‐Ray Emission Spectra from Some NiAl Alloys

Absolute calibration of space- and time-resolving flat-field vacuum ultraviolet spectrograph under both P and S polarized light conditions for plasma diagnostics

Optical Anisotropy of MgF, in Its UV Absorption Region

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