scholarly journals A Fourier transform spectrometer without a beam splitter for the vacuum ultraviolet range: From the optical design to the first UV spectrum

2009 ◽  
Vol 80 (4) ◽  
pp. 043101 ◽  
Author(s):  
N. de Oliveira ◽  
D. Joyeux ◽  
D. Phalippou ◽  
J. C. Rodier ◽  
F. Polack ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Vacuum Ultraviolet ◽  
Beam Splitter ◽  
Optical Design ◽  
Fourier Transform Spectrometer ◽  
Uv Spectrum ◽  
Ultraviolet Range

A Fourier transform spectrometer for the vacuum ultraviolet: design and performance

1987 ◽  
Vol 20 (1) ◽  
pp. 54-60 ◽  
Author(s):  
A P Thorne ◽  
C J Harris ◽  
I Wynne-Jones ◽  
R C M Learner ◽  
G Cox
Keyword(s):  
Fourier Transform ◽  
Vacuum Ultraviolet ◽  
Fourier Transform Spectrometer ◽  
And Performance

scholarly journals Fourier-Transform VUV Spectroscopy of 14,15N and 12,13C

Atoms ◽  
2020 ◽  
Vol 8 (3) ◽  
pp. 62
Author(s):  
Kin-Fung Lai ◽  
Wim Ubachs ◽  
Nelson De Oliveira ◽  
Edcel J. Salumbides
Keyword(s):  
Fourier Transform ◽  
Excited States ◽  
Vacuum Ultraviolet ◽  
Core Electron ◽  
Isotope Shifts ◽  
Nist Database ◽  
Ultraviolet Range ◽  
Theoretical Predictions ◽  
Laser Experiments ◽  
Absorption Measurements

Accurate Fourier-transform spectroscopic absorption measurements of vacuum ultraviolet transitions in atomic nitrogen and carbon were performed at the Soleil synchrotron. For 14N, transitions from the 2s22p34S3/2 ground state and from the 2s22p32P and 2D metastable states were determined in the 95–124 nm range at an accuracy of 0.025cm−1. The combination of these results with data from previous precision laser experiments in the vacuum ultraviolet range reveals an overall and consistent offset of −0.04 cm−1 from values reported in the NIST database. The splittings of the 2s22p34S3/2 – 2s2p44PJ transitions are well-resolved for 14N and 15N and the isotope shifts determined. While excitation of a 2p valence electron yields very small isotope shifts, excitation of a 2s core electron results in large isotope shifts, in agreement with theoretical predictions. For carbon, six transitions from the ground 2s22p23PJ and 2s22p3s3PJ excited states at 165 nm are measured for both 12C and 13C isotopes.

Optical Design Of The ATMOS Fourier Transform Spectrometer

1979 ◽  
Author(s):  
Irving R. Abel ◽  
Bruce R. Reynolds ◽  
J. B. Breckinridge ◽  
J. Pritchard
Keyword(s):  
Fourier Transform ◽  
Optical Design ◽  
Fourier Transform Spectrometer

A FOURIER TRANSFORM SPECTROMETER WITHOUT BEAM SPLITTER FOR THE VUV–EUV RANGE

2002 ◽  
Vol 09 (01) ◽  
pp. 655-660 ◽  
Author(s):  
NELSON DE OLIVEIRA ◽  
DENIS JOYEUX ◽  
DANIEL PHALIPPOU ◽  
FRANCOIS POLACK
Keyword(s):  
Fourier Transform ◽  
Sampling Error ◽  
Sampling Interval ◽  
Path Difference ◽  
Fourier Transform Spectrometer ◽  
Uv Spectrum ◽  
Apparatus Function ◽  
Beam Splitters ◽  
Tilt Error ◽  
Band Spectra

We describe a Fourier transform spectrometer designed to operate down to 60 nm on a synchrotron beam line. As far as we know, there is no such instrument available in the EUV (λ < 140 nm) partly because manufacturing accurate beam splitters remains the major difficulty at these wavelengths. We use a wave front division interferometer instead of an amplitude division one to overcome this difficulty. The interferometer is based on a modified Fresnel bimirror configuration, which is controlled by an original optical system. This system keeps the mirror tilt error to a negligible value during mirror translation, and provides a sensitive interferometric measurement of the mirror translation. The sampling interval is 29 nm (path difference), allowing one to record large band spectra down to λ = 58 nm with spectral resolution δσ = 0.33 cm -1 for 512 K samples (one-sided interferograms). We measured the apparatus function by recording an interferogram from a He–Ne stabilized laser. By studying the white noise in the corresponding spectrum, we found that the sampling error in the interferogram was about 0.4 nm rms, which produces a near-perfect apparatus function. Finally, we recorded the visible/near UV spectrum of an arc mercury lamp for illustration.

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