Výsledky vyhledávání - "D. G. Richmond"

Intermediate structure in the photoexcitation ofSem77,Brm79, andBam137

Autor: V. Yu. Ponomarev, D. G. Richmond, M. Huber, C. Schlegel, Carl B. Collins, P. von Neumann-Cosel, Kristiaan Heyde, K. N. Taylor, T. W. Sinor, J. J. Carroll, Achim Richter

Publikováno v: Physical Review C. 48:2238-2245

Continuing the systematic investigation into the photoexcitation of isomers over wide mass and energy ranges, the production of $^{77}\mathrm{Se}^{\mathit{m}}$, $^{79}\mathrm{Br}^{\mathit{m}}$, and $^{137}\mathrm{Ba}^{\mathit{m}}$ was studied with th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::39d18a2866e183d769d2f80e7c697202
https://doi.org/10.1103/physrevc.48.2238

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Absolute measurement of spatial and spectral characteristics of bremsstrahlung using the photoexcitation of nuclear isomers

Autor: K. N. Taylor, J. D. Standifird, N. Huxel, Carl B. Collins, Achim Richter, T. W. Sinor, C. Hong, J. J. Carroll, D. G. Richmond, P. von Neumann-Cosel

Publikováno v: Review of Scientific Instruments. 64:2298-2305

A method of obtaining absolute, direct measurements of the spatial and spectral characteristics of bremsstrahlung is discussed. This technique, called x‐ray activation of nuclei (XAN) is based on the use of well‐known photonuclear reactions which

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d79abc70830f66e202e1c16cbf9323bf
https://doi.org/10.1063/1.1143925

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Structure of intermediate states in the photoexcitation of the 89Y isomer

Autor: C. Schlegel, V. Yu. Ponomarev, D. G. Richmond, Achim Richter, R. Schulz, T. W. Sinor, Carl B. Collins, K. N. Taylor, James Carroll, M. Huber, P. von Neumann-Cosel

Publikováno v: Nuclear Physics A. 559:253-265

Resonant photon scattering off 89Y was investigated in a measurement of the 89Ym excitation function for bremsstrahlung endpoint energies E0 = 2−5 MeV and in a nuclear-resonance-fluorescence experiment with E0 = 5 MeV. The results are compared to a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5d7b8856d093f1e711c001032ca6974e
https://doi.org/10.1016/0375-9474(93)90190-9

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Status and issues in the development of a γ-ray laser. II. Giant resonances for the pumping of nuclei

Autor: Carl B. Collins, T. W. Sinor, J. D. Standifird, D. G. Richmond, C. Hong, K. N. Taylor, James Carroll

Publikováno v: Laser and Particle Beams. 11:43-54

A γ-ray laser would stimulate the emission of radiation of wavelengths below 1 Å from excited states of nuclei. However, the anticipation of a need for high pump powers tended to discourage early research and the difficulties in demonstrating a dev

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::76604fe06d1b7dbf1eb1ec86e23bf24e
https://doi.org/10.1017/s026303460000690x

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Common thresholds and the role of deformations in the photoexcitation of isomers

Autor: Carl B. Collins, W. Ziegler, T. W. Sinor, P. von Neumann-Cosel, Achim Richter, James Carroll, K. N. Taylor, D. G. Richmond, M. Huber

Publikováno v: Physical Review C. 46:952-960

Photoexcitations of the short-lived isomers {sup 167}Er{sup {ital m}}, {ital T}{sub 1/2}=2.28 s, {sup 179}Hf{sup {ital m}}, {ital T}{sub 1/2}=18.68 s, {sup 191}Ir{sup {ital m}}, {ital T}{sub 1/2}=4.94 s, and {sup 197}Au{sup {ital m}}, {ital T}{sub 1/

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9940fa1517fba46da2dc1f796193c256
https://doi.org/10.1103/physrevc.46.952

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Resonant photoexcitation of isomers. 115Inm as a test case

Autor: D. G. Richmond, W. Ziegler, Achim Richter, T. W. Sinor, P. von Neumann-Cosel, Kristiaan Heyde, Carl B. Collins, James Carroll, C. Spieler, K. N. Taylor

Publikováno v: Physics Letters B. 266:9-13

Large integrated cross sections for the photoexcitation of 115Inm have been detected around Ex=3MeV. Complementary nuclear resonance fluorescence studies prove that the g.s. transition strength is largely confined to the same energy region and the in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8006030eeed50ba5b3de9c82771f33d0
https://doi.org/10.1016/0370-2693(91)90736-a

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Photoexcitation of nuclear isomers by (γ,γ’) reactions

Autor: F. J. Agee, D.A. Whittaker, Carl B. Collins, James Carroll, David P. Davis, T. W. Sinor, D. G. Richmond, J. A. Anderson, M. J. Byrd, Peter P. Antich, Y. Paiss, K. N. Taylor, C. D. Eberhard, E. C. Scarbrough, Marc Litz, W. L. Hodge, K. G. Kerris, G. A. Huttlin

Publikováno v: Physical Review C. 43:1238-1247

Photoexcitation of the isomers of 19 nuclides was examined in this work. Four accelerators were used as sources of bremsstrahlung to expose the samples and end-point energies covered the range from 0.5 to 11 MeV. No evidence was found for nonresonant

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fcbfff01d27741163359a07a2860b1b8
https://doi.org/10.1103/physrevc.43.1238

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Excitation ofTem123andTem125through (γ,γ’) reactions

Autor: Peter von Neumann-Cosel, C. Spieler, D. G. Richmond, James Carroll, Achim Richter, Carl B. Collins, N. Huxel, M. Huber, W. Ziegler, K. N. Taylor, T. W. Sinor

Publikováno v: Physical Review C. 43:897-900

Photoexcitation of the long-lived isomers {sup 123}Te{sup {ital m}}, {ital T}{sub 1/2}=119.7 d, and {sup 125}Te{sup {ital m}}, {ital T}{sub 1/2}=58 d, was produced with bremsstrahlung from the superconducting Darmstadt linear accelerator. The excitat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::80059964758f9e04ccd26977e7af83d5
https://doi.org/10.1103/physrevc.43.897

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