Výsledky vyhledávání - "B.S. Fraenkel"

Design considerations for a Johann X-ray crystal spectrometer using double reflection in a single crystal to obtain spatially resolved information about a hot plasma seeded with highly charged ions

Autor: A. Ince-Cushman, Manfred Bitter, B.S. Fraenkel, J. E. Rice, Z.H. Kalman

Publikováno v: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 235:226-230

Enhanced confinement regimes with steep gradients of density profiles and the need to place rotation velocity profiles call for maximum spatial resolution in the tokamak plasma. It is proposed to achieve such a resolution by using X-ray spectroscopy

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::02b6bd519e484ebb3d63a2a97dceee0e
https://doi.org/10.1016/j.nimb.2005.03.178

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Identification of Forbidden Lines in the Soft—X-Ray Spectrum of the TFR Tokamak

Autor: A. Bar-Shalom, Michael Finkenthal, M. Mattioli, C. Breton, B.S. Fraenkel, J.L. Schwob, S. Egert, C. DeMichelis, M. Klapisch

Publikováno v: Physical Review Letters. 41:403-406

We report an observation of electric quadrupole transitions in a laboratory plasma. Two intense lines seen at 58.832 and 57.927 A in the spectrum of the TFR tokamak are attributed to the E2 transitions 3d/sup 10/ - 3d/sup 9/4s (J = 2) of Mo XV. This

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f1fc6265bf94d467d3cfc66dfe9b4276
https://doi.org/10.1103/physrevlett.41.403

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Review of the research in progress in the vacuum ultraviolet

Autor: A. Jacobs, E. Alexander, B.S. Fraenkel, U. Feldmann, J. Makovky

Publikováno v: Journal of Quantitative Spectroscopy and Radiative Transfer. 2:725-728

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::923245ecc9e5eafdbc58897685f21669
https://doi.org/10.1016/0022-4073(62)90060-2

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A method of differentiating between atomic spectra of high degrees of ionization

Autor: U. Feldman, E. Alexander, B.S. Fraenkel

Publikováno v: Journal of Quantitative Spectroscopy and Radiative Transfer. 4:501-506

It has been found that the intensity of spectra obtained in the vacuum u.v. with a triggered vacuum spark rises monotonely with the degree of ionization, when compared with their intensity from a sliding spark. In this way, differentiation between sp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5763c639e4be3144b863ac5d6bb72c60
https://doi.org/10.1016/0022-4073(64)90012-3

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X-ray spectra of highly ionised iron and nickel atoms

Autor: B.S. Fraenkel, J. L. Schwob

Publikováno v: Physics Letters A. 40:83-85

Sharp X-ray spectra of extremely high ionised Fe and Ni were obtained by vacuum sparks, with a curved crystal X-ray spectrometer. Fe XXVI and Ni XXVII were reached.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7f2e8325833cc2c9079210b147c2fab4
https://doi.org/10.1016/0375-9601(72)90210-1

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Evidence for high temperatures in minute plasma points from X-ray spectra of FeXXV and FeXXVI

Autor: J. L. Schwob, B.S. Fraenkel

Publikováno v: Physics Letters A. 40:81-82

Analysis of profiles and intensities of lines emitted by FeXXVI and FeXXV in a vacuum spark show presence of extremely high temperatures. Electronic temperatures higher than 4 keV and ionic temperatures as high as 30 keV exist in minute plasma points

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6972bb00cdf090a27690bc7d28132c7c
https://doi.org/10.1016/0375-9601(72)90209-5

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Highly Stripped Ions (Up to Mo XXXIII) and Forbidden Mo Lines in the Soft X-Ray Spectrum from TFR Tokamak

Autor: M. Klapisch, M. Finkenthal, B.S. Fraenkel, N. Schweitzer, J. L. Schwob

Publikováno v: International Astronomical Union Colloquium. 43:37-37

The spectrum of the TFR Tokamak has been observed in the range 5-100 Å. Identification of Mo XIV to Mo XXXIII lines originating from the limiter was achieved by comparison with the Mo spectrum emitted from a low-inductance vacuum spark, and with rel

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::763e9e5b7559c173f5d69becd9ef42ac
https://doi.org/10.1017/s0252921100120354

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X-Ray Spectra of Tokamak Plasma

Autor: B.S. Fraenkel

Publikováno v: International Astronomical Union Colloquium. 43:36-36

A spectrum covering Fe XXV to Fe XXII x ray lines from a tokamak (PLT) plasma has been obtained. Results indicate similarity with the flare spectrum in this region - the forbidden lines also appear in the PLT spectrum.Te was about 1.8 keV- a value co

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::26e8d647b61eb89dc143c94c71a21067
https://doi.org/10.1017/s0252921100120342

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