High-resolution spectroscopy of ethylene by means of a spin-flip-Raman laser

1976 ◽  
Vol 9 (1) ◽  
pp. 35-37 ◽  
Author(s):  
J. Häger ◽  
W. Hinz ◽  
H. Walther ◽  
G. Strey
Keyword(s):  
High Resolution ◽  
Raman Laser ◽  
High Resolution Spectroscopy ◽  
Spin Flip

High resolution spectroscopy and atmospheric and stratospheric detection of minor constituents with the use of tunable spin flip Raman lasers

1979 ◽  
Vol 293 (1402) ◽  
pp. 257-275 ◽  
Keyword(s):  
High Resolution ◽  
Raman Laser ◽  
High Resolution Spectroscopy ◽  
Saturation Spectroscopy ◽  
Minor Constituents ◽  
Two Photon ◽  
Spin Flip ◽  
Raman Lasers ◽  
Acoustic Techniques ◽  
Absorption Measurements

With the advent of a variety of tunable infrared lasers, high resolution spectroscopy in this region has received a great boost. In particular the high power spin flip Raman laser is an excellent tool for very high resolution spectroscopy of ground state as well as excited states of molecules, saturation spectroscopy of molecules and two-photon Doppler-free spectroscopy of molecules. In addition, the use of opto-acoustic techniques for absorption measurements in conjunction with the spin flip Raman laser is capable of measuring absorption coefficients as small as 10 -10 cm -1 . This ability has been of importance in the detection of minor constituents in the atmosphere and the stratosphere. This paper reviews some of these interesting investigations.

High resolution infrared spectroscopy using a spin-flip Raman laser: the bands of carbonyl sulphide near 1890 cm–1

1978 ◽  
Vol 74 (0) ◽  
pp. 129-135 ◽  
Author(s):  
Peter G. Buckley ◽  
John H. Carpenter ◽  
Allister McNeish ◽  
John D. Muse ◽  
James J. Turner ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
High Resolution ◽  
Raman Laser ◽  
Spin Flip ◽  
Carbonyl Sulphide

Spin-flip Raman scattering in CdS and High resolution spectroscopy near 5145 Å

1973 ◽  
Vol 12 (12) ◽  
pp. 1303-1307 ◽  
Author(s):  
E. Amzallag ◽  
C. Dagautier ◽  
P. Moch ◽  
M. Balkanski
Keyword(s):  
High Resolution ◽  
Raman Scattering ◽  
High Resolution Spectroscopy ◽  
Spin Flip

Microcalorimeters for X-Ray Spectroscopy

1988 ◽  
Vol 102 ◽  
pp. 41
Author(s):  
E. Silver ◽  
C. Hailey ◽  
S. Labov ◽  
N. Madden ◽  
D. Landis ◽  
...  
Keyword(s):  
High Resolution ◽  
High Efficiency ◽  
Thermal Response ◽  
Low Noise ◽  
High Resolution Spectroscopy ◽  
Superconducting Transition ◽  
Sapphire Substrates ◽  
Laboratory Plasmas ◽  
Adiabatic Demagnetization ◽  
Theoretical Predictions

The merits of microcalorimetry below 1°K for high resolution spectroscopy has become widely recognized on theoretical grounds. By combining the high efficiency, broadband spectral sensitivity of traditional photoelectric detectors with the high resolution capabilities characteristic of dispersive spectrometers, the microcalorimeter could potentially revolutionize spectroscopic measurements of astrophysical and laboratory plasmas. In actuality, however, the performance of prototype instruments has fallen short of theoretical predictions and practical detectors are still unavailable for use as laboratory and space-based instruments. These issues are currently being addressed by the new collaborative initiative between LLNL, LBL, U.C.I., U.C.B., and U.C.D.. Microcalorimeters of various types are being developed and tested at temperatures of 1.4, 0.3, and 0.1°K. These include monolithic devices made from NTD Germanium and composite configurations using sapphire substrates with temperature sensors fabricated from NTD Germanium, evaporative films of Germanium-Gold alloy, or material with superconducting transition edges. A new approache to low noise pulse counting electronics has been developed that allows the ultimate speed of the device to be determined solely by the detector thermal response and geometry. Our laboratory studies of the thermal and resistive properties of these and other candidate materials should enable us to characterize the pulse shape and subsequently predict the ultimate performance. We are building a compact adiabatic demagnetization refrigerator for conveniently reaching 0.1°K in the laboratory and for use in future satellite-borne missions. A description of this instrument together with results from our most recent experiments will be presented.

scholarly journals Spectroscopic characterization of a thermodynamically stable doubly charged diatomic molecule: MgAr2+

2021 ◽  
Author(s):  
Dominik Wehrli ◽  
Matthieu Génévriez ◽  
Frédéric Merkt
Keyword(s):  
High Resolution ◽  
Diatomic Molecule ◽  
Spectroscopic Characterization ◽  
New Method ◽  
High Resolution Spectroscopy ◽  
Singly Charged ◽  
Doubly Charged

We present a new method to study doubly charged molecules relying on high-resolution spectroscopy of the singly charged parent cation, and report on the first spectroscopic characterization of a thermodynamically stable diatomic dication, MgAr2+.

scholarly journals The Voyage of Metals in the Universe from Cosmological to Planetary Scales: the need for a Very High-Resolution, High Throughput Soft X-ray Spectrometer

2021 ◽  
Author(s):  
F. Nicastro ◽  
J. Kaastra ◽  
C. Argiroffi ◽  
E. Behar ◽  
S. Bianchi ◽  
...  
Keyword(s):  
Chemical Composition ◽  
High Resolution ◽  
Deep Understanding ◽  
High Resolution Spectroscopy ◽  
X Ray ◽  
Viable Solution ◽  
Surrounding Space ◽  
Nuclear Processes ◽  
The Universe ◽  
Very High

AbstractMetals form an essential part of the Universe at all scales. Without metals we would not exist, and the Universe would look completely different. Metals are primarily produced via nuclear processes in stars, and spread out through winds or explosions, which pollute the surrounding space. The wanderings of metals in-and-out of astronomical objects are crucial in determining their own evolution and thus that of the Universe as a whole. Detecting metals and assessing their relative and absolute abundances and energetics can thus be used to trace the evolution of these cosmic components. The scope of this paper is to highlight the most important open astrophysical problems that will be central in the next decades and for which a deep understanding of the Universe’s wandering metals, their physical and kinematical states, and their chemical composition represents the only viable solution. The majority of these studies can only be efficiently performed through High Resolution Spectroscopy in the soft X-ray band.

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