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Nuclear resonant scattering of synchrotron radiation by gaseous krypton

Autor: G. V. Smirnov, U. van Bürck, Alfred Q. R. Baron, J. Arthur, S. L. Ruby, G. S. Brown, A. I. Chumakov

Publikováno v: Physical Review B. 51:16384-16387

We have observed scattering of synchrotron radiation by the 9.4-keV nuclear resonance of gaseous {sup 83}Kr. In a gas, there is no recoilless absorption (no Moessbauer effect). A cell of krypton gas (natural abundance, 12% {sup 83}Kr) was placed afte

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bdb559fc2567350dcfd20bece094adfb
https://doi.org/10.1103/physrevb.51.16384

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Angular dependence of specular resonant nuclear scattering of x rays

Autor: G. S. Brown, Alfred Q. R. Baron, S. L. Ruby, A. I. Chumakov, J. Arthur, G. V. Smirnov

Publikováno v: Physical Review B. 50:10354-10357

Specular scattering of x rays by electrons in a material becomes large at grazing angles below the critical angle for external reflection. In contrast, we observe specular scattering by resonant nuclei to peak at the critical angle and decrease at sm

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e48781f6e1cc2eac17dded8de841cfa
https://doi.org/10.1103/physrevb.50.10354

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Time resolved detection of X-rays using large area avalanche photodiodes

Autor: S. L. Ruby, Alfred Q. R. Baron

Publikováno v: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 343:517-526

We have measured the efficiencies and time responses of several large-area (200 and 80 mm2) beveled-edge avalanche photodiodes to X-rays of energy 6–20 keV in a photon counting mode. The diodes were used with avalanche gains of 102 to 103. Detector

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::02596f6461d3a36a440cf8f09b1bcbc9
https://doi.org/10.1016/0168-9002(94)90232-1

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Studying hyperfine fields with resonant nuclear diffraction of x rays (invited)

Autor: J. Arthur, S. L. Ruby, George Brown, G. K. Shenoy, D. E. Brown

Publikováno v: Journal of Applied Physics. 67:5704-5708

It is shown that the hyperfine field in a crystal can be characterized in a short measurement using resonant nuclear diffraction at a high‐brightness synchrotron x‐ray beamline. In addition to the strength of the field, this technique is sensitiv

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b16b2b992254f8908ec71c63a49cabbc
https://doi.org/10.1063/1.345936

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Currents and fields reveal the propagation of nuclear polaritons through a resonant target

Autor: Alfred Q. R. Baron, J. Arthur, G. S. Brown, A. I. Chumakov, S. L. Ruby, U. van Bürck, Winfried Petry, G. V. Smirnov

Publikováno v: Physical Review A. 76

Nuclear resonant scattering of synchrotron radiation was investigated simultaneously in the spatially incoherent $(4\ensuremath{\pi})$ and in the spatially coherent (forward) scattering channels. A theory is presented which describes the main contrib

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::89bd731a373ebc6486dcbfe92134e5ba
https://doi.org/10.1103/physreva.76.043811

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Nuclear scattering of synchrotron radiation by 181TA

Autor: U. van Bürck, Alfred Q. R. Baron, G. Wortmann, G. S. Brown, J. Arthur, S. L. Ruby, Aleksandr I. Chumakov, G. V. Smirnov

Publikováno v: Physical review letters. 75(3)

We report the first observation of excitation of the 6.2 keV nuclear level of ${}^{181}\mathrm{Ta}$ by synchrotron radiation. The absolute energy of the level was determined to be $6214\ifmmode\pm\else\textpm\fi{}2$ eV. The time distribution of nucle

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2da62fc66cbf008f67417254169b7d31
https://pubmed.ncbi.nlm.nih.gov/10060049

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Resonance energy shifts during nuclear Bragg diffraction of x rays

Autor: J. Arthur, George Brown, D. E. Brown, S. L. Ruby

Publikováno v: Physical Review Letters. 63:1629-1632

We have observed dramatic changes in the time distribution of synchrotron x rays resonantly scattered from $^{57}\mathrm{Fe}$ nuclei in a crystal of yttrium iron garnet, which depend on the deviation angle of the incident radiation from the Bragg ang

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::079e034e8ddc3b7becd18de7b374c360
https://doi.org/10.1103/physrevlett.63.1629

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