Resonant-transfer-and-excitation for highly charged ions (16 less than or equal to Z less than or equal to 23) in collisions with helium
Significant new evidence is presented for resonant-transfer-and-excitation (RTE) in ion-atom collisions. This process occurs when a target electron is captured simultaneously with the excitation of the projectile followed by deexcitation via photon emission. RTE, which is analogous to dielectronic recombination (DR), proceeds via the inverse of an Auger transition, and is expected to be resonant for projectile velocities corresponding to the energy of the ejected electron in the Auger process. RTE was investigated by measuring cross sections for projectile K x-ray emission coincident with single electron capture for 15 to 200 MeV /sub 16/S/sup 13 +/, 100 to 360 MeV /sub 20/Ca/sup 16 +/ /sup 17 +/ /sup 18 +/ and 180 to 460 MeV /sub 23/V/sup 19 +/ /sup 20 +/ /sup 21 +/ ions colliding with helium. Strong resonant behavior, in agreement with theoretical calculations of RTE, was observed in the coincidence cross sections.
- Research Organization:
- Western Michigan Univ., Kalamazoo (USA). Dept. of Physics; New Univ. of Ulster, Coleraine (UK). Dept. of Physics; North Carolina Univ., Chapel Hill (USA). Dept. of Physics; Missouri Univ., Rolla (USA). Dept. of Physics; Wesleyan Univ., Middletown, CT (USA). Dept. of Physics; Brookhaven National Lab., Upton, NY (USA)
- DOE Contract Number:
- AC02-83ER13116; AC02-76CH00016
- OSTI ID:
- 6236402
- Report Number(s):
- BNL-35594; CONF-841117-28; ON: DE85005132
- Country of Publication:
- United States
- Language:
- English
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Resonant-transfer-and-excitation for highly charged ions (16 less than or equal to Z less than or equal to 23) in collisions with helium. [70-500 MeV S/sup 13 +/, Ca/sup 18 +/, V/sup 21 +/]
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Conference
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Sat Dec 31 23:00:00 EST 1983
·
OSTI ID:5860398
New evidence for resonant-transfer-and-excitation for /sub 16/S, /sub 20/Ca, and /sub 23/V ions colliding with helium
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Sat Dec 31 23:00:00 EST 1983
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OSTI ID:6262652
Correlated charge changing interactions and K x-ray emission in ion-atom collisions. Progress report, August 15, 1983-March 15, 1984
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Related Subjects
640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
CADMIUM IONS
CALCIUM IONS
CHARGE EXCHANGE
CHARGED PARTICLES
COLLISIONS
DATA
ELEMENTS
ENERGY RANGE
EXPERIMENTAL DATA
FLUIDS
GASES
HELIUM
INFORMATION
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
MEV RANGE
MEV RANGE 10-100
MEV RANGE 100-1000
NONMETALS
NUMERICAL DATA
RARE GASES
RESONANCE
SULFUR IONS
VANADIUM IONS
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
CADMIUM IONS
CALCIUM IONS
CHARGE EXCHANGE
CHARGED PARTICLES
COLLISIONS
DATA
ELEMENTS
ENERGY RANGE
EXPERIMENTAL DATA
FLUIDS
GASES
HELIUM
INFORMATION
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
MEV RANGE
MEV RANGE 10-100
MEV RANGE 100-1000
NONMETALS
NUMERICAL DATA
RARE GASES
RESONANCE
SULFUR IONS
VANADIUM IONS