Kinetic-energy release in N{sub 2} fragmentation by charge-changing collisions of 2-MeV C{sup +} ions

Journal Article · Mon Nov 15 04:00:00 EST 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.054702· OSTI ID:21528769

Mizuno, T; Yamada, T; Tsuchida, H; Itoh, A ^[1]; Nakai, Y ^[2]

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1. Department of Nuclear Engineering, Kyoto University, Kyoto 606-8501 (Japan)
2. RIKEN Nishina Center, Wako, Saitama 351-0198 (Japan)

Collision-induced fragmentation of N{sub 2} was investigated for 2-MeV C{sup +} ions under charge-changing conditions of C{sup +{yields}}C{sup q+} (q=0,2,3). Coincidence measurement of fragment ions was performed by means of a momentum three-dimensional imaging technique at scattering angles of {theta}=0 and 1.0 mrad. Kinetic-energy release (KER) obtained for a fragmentation channel of N{sub 2}{sup 2+{yields}}N{sup +}+N{sup +} was found to differ significantly in electron loss and capture collisions. In two-electron-loss collisions (C{sup +{yields}}C{sup 3+}), KER spectra were essentially identical for {theta}=0 and 1.0 mrad. It is concluded that the energy level of dissociating excited states of N{sub 2}{sup 2+} may be saturated when the interaction strength, defined as (q/vb), exceeds 0.65, where q and v are the charge and the velocity, respectively, of an incident ion, and b is the impact parameter.

• OSTI ID: 21528769
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 82; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
CARBON IONS
CHARGED PARTICLES
COLLISIONS
ELECTRON LOSS
ENERGY
ENERGY LEVELS
ENERGY RANGE
EXCITED STATES
FRAGMENTATION
GRAVITATIONAL FIELDS
IMPACT PARAMETER
INTERACTIONS
ION COLLISIONS
IONS
KERR FIELD
KINETIC ENERGY
MEV RANGE
NITROGEN IONS
SCATTERING
THREE-DIMENSIONAL CALCULATIONS