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Doppler broadening

About: Doppler broadening is a research topic. Over the lifetime, 5509 publications have been published within this topic receiving 92552 citations.


Papers
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Journal ArticleDOI
TL;DR: In this article, the ion temperature (1.2 keV) is consistent with Hinton-Rosenbluth heat conduction in the plateau regime as the dominant energy loss from the plasma with central ion energy confinement times 0.1 s.
Abstract: Radial profiles of the ion temperature have been measured on PLT by using neutron flux Doppler broadening of oxygen, carbon and helium line radiations, and charge exchange. The ion temperature ( 1.2 keV) is consistent with Hinton-Rosenbluth neoclassical heat conduction in the plateau regime as the dominant energy loss from the plasma with central ion energy confinement times 0.1 s.

33 citations

Journal ArticleDOI
TL;DR: In this paper, the Doppler broadening of neutron resonance absorption cross sections has been used for temperature determination in samples of rhenium and tantalum and has given temperatures to an accuracy better than ± 1°C.
Abstract: We present a new method of data analysis for determination of temperature from the Doppler broadening of neutron resonance absorption cross sections. The method is model independent and simple to use. It has been applied to measurements on samples of rhenium and tantalum and has given temperatures to an accuracy better than ±1°C.

33 citations

Patent
10 Jun 1988
TL;DR: In this article, a fiber-optical sensor used for measuring the Doppler broadening of scattered laser light by the principle of quasi-elastic light scattering (QELS) is presented.
Abstract: In a fiber-optical sensor used for measuring the Doppler broadening of scattered laser light by the principle of quasi-elastic light scattering (QELS), the scattered light originating from particles in movement, the emergence surface (7) for the laser light at the end of a single-mode or multimode light guide (3) used as an immersion probe is inclined at an angle 0<φ≦15°, preferably 1°≦φ≦6°, the angle of inclination being de-fined by the optical axis (8) of the light guide (3) and the normal (9) of the emergence surface (7).

33 citations

Journal ArticleDOI
TL;DR: In this paper, the frequency of a 5145-A argon ion laser has been locked to an absorption line in a molecular beam of I2 and the drift of the laser frequency was less than 20 kHz.
Abstract: The frequency of a 5145‐A argon‐ion laser has been locked to an absorption line in a molecular beam of I2. The drift of the laser frequency was less than 20 kHz or Δν/ν<3 × 10−11 for the duration of a run which lasted about 20 min. A molecular‐beam external reference is attractive because transitions observed in the isolated conditions in the beam do not suffer shifts due to collisions or collisional broadening and, if the molecular beam is excited orthogonally, Doppler broadening can be virtually eliminated.

33 citations

Journal ArticleDOI
TL;DR: In this article, a modified version of the Anderson-Tsao-Curnutte theory was employed for the description of the collisional halfwidth and shift behavior of the spectral lines in the case of dipole molecule interactions with noble gas atoms.

33 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202331
202290
2021122
2020134
2019128
2018122