Angular and high-frequency analysis of electron interference structures in {approx}60 MeV/u Kr{sup 34+}+H{sub 2} collisions

Journal Article · Tue Aug 15 00:00:00 EDT 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.74.022707· OSTI ID:20853068

Tanis, J A ^[1]; Chesnel, J -Y; Cassimi, A; Grandin, J -P; Adoui, L; Hennecart, D ^[2]; Sulik, B ^[3]; Skogvall, B; Sobocinski, P; Stolterfoht, N ^[4]

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1. Department of Physics, Western Michigan University, Kalamazoo, Michigan 49008 (United States)
2. CIRIL Unite Mixte CEA-CNRS-EnsiCaen-Universite de Caen, F-14050, Caen Cedex 4 (France)
3. Institute for Nuclear Research (ATOMKI), H-4001, Debrecen (Hungary)
4. Hahn-Meitner-Institut Berlin GmbH, Glienickerstrasse 100, D-14109 Berlin (Germany)

Detailed analyses of previous measurements, combined with additional measurements reported here, have been made of electron interference structures observed in 60 MeV/u Kr{sup 34+}+H{sub 2} collisions. Results are used to characterize the angular dependence of the primary interference structures over a wide range of electron ejection angles, particularly backward angles, and, additionally, to search for high-frequency structures as reported recently for 1-5 MeV/u H{sup +}+H{sub 2} collisions [Hossain et al., Phys. Rev. A 72, 010701(R) (2005)]. The data for backward ejection angles, in combination with earlier data, permit a detailed comparison with theory over the range 30 deg. -150 deg. , showing that none of the existing theories predict accurately the observed oscillation frequencies for backward angles. Electron spectra for 90 deg. and 150 deg. taken in small energy steps and with improved statistics compared to earlier measurements were examined by means of a Fourier analysis but no evidence of the high-frequency structures reported for H{sup +}+H{sub 2} collisions was found.

• OSTI ID: 20853068
• Journal Information: Physical Review. A, Vol. 74, Issue 2; Other Information: DOI: 10.1103/PhysRevA.74.022707; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
COMPARATIVE EVALUATIONS
ELECTRON SPECTRA
ELECTRONS
FOURIER ANALYSIS
FREQUENCY ANALYSIS
HYDROGEN
HYDROGEN IONS 1 PLUS
INTERFERENCE
INTERFEROMETRY
ION BEAMS
ION-MOLECULE COLLISIONS
KRYPTON
MEV RANGE
MOLECULES
MULTICHARGED IONS
OSCILLATIONS
STATISTICS