Intense beam-target interactions in linear induction accelerator radiography systems

George J Caporaso; Y. J. Chen; T. Houck; S. Sampayan; T. Hughes; B. Oliver; D. Welch; C. Christ

Intense beam-target interactions in linear induction accelerator radiography systems

George J Caporaso, Y. J. Chen, T. Houck, S. Sampayan, T. Hughes, B. Oliver, D. Welch, C. Christ

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Modern flash x-ray systems employing electron linear induction accelerators require focal spot sizes of order 1 mm diameter incident on high-Z Bremsstrahlung targets. Typical beam parameters are in the range of several kiloamperes, tens of MeV with pulse lengths of order 50 ns. A single pulse with these parameters is so intense that it converts the target material into a hot plasma with velocities on the order of several centimeters per microsecond. Intense axial electric fields will exist on the target surface which may lead to the extraction of light contaminant ions. These ions can travel upstream where they will act as an electrostatic lens which can cause a time varying disruption of the focal spot. Experimental and theoretical work on this backstreaming ion mechanism will be presented along with issues for multiple pulse operation.

Original language	English (US)
Title of host publication	IEEE International Conference on Plasma Science
Publisher	IEEE
Pages	180
Number of pages	1
State	Published - 1999
Externally published	Yes
Event	The 26th IEEE International Conference on Plasma Science (ICOPS99) - Monterey, CA, USA Duration: Jun 20 1999 → Jun 24 1999

Other

Other	The 26th IEEE International Conference on Plasma Science (ICOPS99)
City	Monterey, CA, USA
Period	6/20/99 → 6/24/99

ASJC Scopus subject areas

Condensed Matter Physics

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Cite this

Caporaso, G. J., Chen, Y. J., Houck, T., Sampayan, S., Hughes, T., Oliver, B., Welch, D., & Christ, C. (1999). Intense beam-target interactions in linear induction accelerator radiography systems. In IEEE International Conference on Plasma Science (pp. 180). IEEE.

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title = "Intense beam-target interactions in linear induction accelerator radiography systems",

abstract = "Modern flash x-ray systems employing electron linear induction accelerators require focal spot sizes of order 1 mm diameter incident on high-Z Bremsstrahlung targets. Typical beam parameters are in the range of several kiloamperes, tens of MeV with pulse lengths of order 50 ns. A single pulse with these parameters is so intense that it converts the target material into a hot plasma with velocities on the order of several centimeters per microsecond. Intense axial electric fields will exist on the target surface which may lead to the extraction of light contaminant ions. These ions can travel upstream where they will act as an electrostatic lens which can cause a time varying disruption of the focal spot. Experimental and theoretical work on this backstreaming ion mechanism will be presented along with issues for multiple pulse operation.",

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year = "1999",

language = "English (US)",

pages = "180",

booktitle = "IEEE International Conference on Plasma Science",

publisher = "IEEE",

note = "The 26th IEEE International Conference on Plasma Science (ICOPS99) ; Conference date: 20-06-1999 Through 24-06-1999",

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AU - Caporaso, George J

AU - Chen, Y. J.

AU - Houck, T.

AU - Sampayan, S.

AU - Hughes, T.

AU - Oliver, B.

AU - Welch, D.

AU - Christ, C.

PY - 1999

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N2 - Modern flash x-ray systems employing electron linear induction accelerators require focal spot sizes of order 1 mm diameter incident on high-Z Bremsstrahlung targets. Typical beam parameters are in the range of several kiloamperes, tens of MeV with pulse lengths of order 50 ns. A single pulse with these parameters is so intense that it converts the target material into a hot plasma with velocities on the order of several centimeters per microsecond. Intense axial electric fields will exist on the target surface which may lead to the extraction of light contaminant ions. These ions can travel upstream where they will act as an electrostatic lens which can cause a time varying disruption of the focal spot. Experimental and theoretical work on this backstreaming ion mechanism will be presented along with issues for multiple pulse operation.

AB - Modern flash x-ray systems employing electron linear induction accelerators require focal spot sizes of order 1 mm diameter incident on high-Z Bremsstrahlung targets. Typical beam parameters are in the range of several kiloamperes, tens of MeV with pulse lengths of order 50 ns. A single pulse with these parameters is so intense that it converts the target material into a hot plasma with velocities on the order of several centimeters per microsecond. Intense axial electric fields will exist on the target surface which may lead to the extraction of light contaminant ions. These ions can travel upstream where they will act as an electrostatic lens which can cause a time varying disruption of the focal spot. Experimental and theoretical work on this backstreaming ion mechanism will be presented along with issues for multiple pulse operation.

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