Scaling of X-ray K-shell Sources from Laser-Solid Interactions.

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Description

The application of x-ray sources to imaging of dense objects is a standard technique. The quality of the x-ray image depends both on the x-ray source wavelength and on the flux. To improve the flux of the x-ray source it is important to understand how the conversion efficiency scales with laser irradiance and target material. We present measurements of x-ray conversion efficiency in solid Cr, Fe, Ni, Zn and Ge targets as a function of the laser irradiance using the OMEGA laser facility. The results show a steep decrease in the conversion efficiency with increasing Z while the scaling of ... continued below

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13 p.

Creation Information

Workman, J. B. (Jonathan B.) & Kyrala, George A. January 1, 2001.

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Description

The application of x-ray sources to imaging of dense objects is a standard technique. The quality of the x-ray image depends both on the x-ray source wavelength and on the flux. To improve the flux of the x-ray source it is important to understand how the conversion efficiency scales with laser irradiance and target material. We present measurements of x-ray conversion efficiency in solid Cr, Fe, Ni, Zn and Ge targets as a function of the laser irradiance using the OMEGA laser facility. The results show a steep decrease in the conversion efficiency with increasing Z while the scaling of conversion efficiency with laser irradiance can show a peak. Values for x-ray yield are determined using time-integrated crystal spectrometer data.

Physical Description

13 p.

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  • Invited paper for SPIE's 46th Annual Meeting, San Diego, CA, July 29-August 3, 2001.

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  • Report No.: LA-UR-01-4155
  • Grant Number: none
  • Office of Scientific & Technical Information Report Number: 975659
  • Archival Resource Key: ark:/67531/metadc926208

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  • January 1, 2001

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 12, 2016, 6:16 p.m.

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Workman, J. B. (Jonathan B.) & Kyrala, George A. Scaling of X-ray K-shell Sources from Laser-Solid Interactions., article, January 1, 2001; United States. (digital.library.unt.edu/ark:/67531/metadc926208/: accessed August 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.