Time-resolved measurements of desorbed gas during 1-MeV K^{+} pulsed beam deposition in a stainless steel target
Measurements were made of the density, species, and velocity of the desorbed gas cloud on intense K^{+} beam bombardment of a stainless steel target. Residual gas analyzer measurements indicate that the gas cloud consists of predominantly H_{2}. Energy analyzer measurements of doubly ionized beam io...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2007-09-01
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| Series: | Physical Review Special Topics. Accelerators and Beams |
| Online Access: | http://doi.org/10.1103/PhysRevSTAB.10.093201 |
| Summary: | Measurements were made of the density, species, and velocity of the desorbed gas cloud on intense K^{+} beam bombardment of a stainless steel target. Residual gas analyzer measurements indicate that the gas cloud consists of predominantly H_{2}. Energy analyzer measurements of doubly ionized beam ions show that the ratio of hydrogen gas production to beam density was approximately 3000 molecules/ion at normal incidence. Optical measurements of the evolution of the gas cloud during the beam pulse show a distribution with an average expansion velocity of about 0.5 mm/μs. Comparison is made with a simple model of the gas cloud behavior. |
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| ISSN: | 1098-4402 |