Coincidence experiment concerning the origin of convoy electrons produced by swift deuterium beams traversing carbon foils

Journal Article · Sat Mar 01 04:00:00 EST 1986 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.33.2160· OSTI ID:6007807

Menendez, M G; Duncan, M M; Berry, S D; Sellin, I A; Meckbach, W; Focke, P; Nemirovsky, I B.E.

We have measured convoy electrons produced by the passage of deuterium particles through thin carbon foils in coincidence with emerging particles in both charge states, D/sup +/ and D/sup 0/. The energy spectrum of electrons coincident with emerging D/sup +/ ions exhibits the characteristic convoy-electron cusp shape centered about the projectile velocity. The energy spectrum of electrons coincident with emerging D/sup 0/ particles also exhibits a peak at the projectile velocity, but its shape appears to be qualitatively different from the e-D/sup +/ coincidence spectrum. We suggest that e-D/sup 0/ coincidences are the result of neutralization of D/sup +/ particles (accompanied by convoy electrons) between the sites of congies and agree very well with recent measurements, in the energy range where channel coupling and autoionizing transitions are not important. Comparison is also made with a calculation carried out within the local-density random-phase approximation.

• Research Organization: Department of Physics and Astronomy, University of Georgia, Athens, Georgia 30602
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6007807
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 33:3; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
CARBON
CHARGE EXCHANGE
CHARGED PARTICLES
CHARGED-PARTICLE TRANSPORT
COINCIDENCE METHODS
COLLISIONS
COUNTING TECHNIQUES
DEUTERIUM IONS
ELECTRON SPECTRA
ELEMENTS
FOILS
ION COLLISIONS
ION SPECTROSCOPY
ION-ATOM COLLISIONS
IONS
MEAN FREE PATH
NONMETALS
RADIATION TRANSPORT
SPECTRA
SPECTROSCOPY