Destruction cross sections for fast hydrogen molecules incident on helium, neon, and argon

Journal Article · Mon May 01 04:00:00 EDT 1995 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.51.3831· OSTI ID:44657

de Castro Faria, N V; Borges, I Jr; Coelho, L F.S.; Jalbert, G ^[1]

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1. Instituto de Fisica, Universidade Federal do Rio de Janeiro, Caixa Postal 68 528, Rio de Janeiro 21 945, Rio de Janeiro (Brazil)

We measured the destruction cross sections of fast H{sub 2} molecules (3.0{le}{ital v}{le}7.0 a.u.) in helium, neon, and argon targets. We also measured, complementing previously published data, the H{sub 2}{sup +} destruction cross sections in neon for 3.0{le}{ital v}{le}7.0 a.u. and in helium and argon for {ital v}=3.0 a.u. The H{sub 2} beam was obtained from fast {ital H}{sub 3} molecules dissociated in an auxiliary target. These H{sub 2} and H{sub 2}{sup +} destruction cross sections were compared with the previous ones for H{sub 2}{sup +} and H{sub 3}{sup +} ions and also with the H electron-loss cross section, and a simple description is able to explain quantitatively the observed trends for these four sets of experiments, giving also information about the main destruction channels for the H{sub 2} and H{sub 2}{sup +} molecules.

• OSTI ID: 44657
• Journal Information: Physical Review A, Journal Name: Physical Review A Journal Issue: 5 Vol. 51; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ATOM-MOLECULE COLLISIONS
CROSS SECTIONS
FRAGMENTATION
HYDROGEN
MEV RANGE
PROJECTILES
RARE GASES