Izik Ben-Itzhak, Eric Wells, Kevin D. Carnes
J.R. Macdonald Laboratory, Kansas State University, Manhattan, KS 66506

Hiro Tawara
Institute for Fusion Science, Nagoya 464-01, Japan

Abstract

Low velocity protons (0.64 to 2.5 a.u.) were collided with CO molecules using the J.R. Macdonald laboratory CRYEBIS. The final projectile charge state was determined experimentally, and multi-hit time of flight measurements allowed the measurement of all charged fragments produced in the collision, a distinction from a previous measurement¹. The velocity of the protons ranged from below the expected threshold for ionization, where capture dominates, to well above the threshold, where capture and ionization are approximately equal in importance. The measurement is being analyzed to determine how the fragmentation branching ratios and kinetic energy distributions change with projectile velocity. The results extend a previous KSU experiment spanning the velocity range from 3.5 to 22 a.u., a region where capture is negligible and perturbation theory is valid.

Supported by Division of Chemical Sciences, Office of Basic Energy Sciences, Office of Energy Research, U.S. Department of Energy.

¹Shah, M.B. and Gilbody, H.B., J. Phys B 23, 1491 (1990)

Submitted to DAMOP/APS Centennial Meeting, Atlanta, GA, in March 1999

 

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