Izvorni znanstveni članak
Two electron capture cross sections into ground state in collision of bare projectile ions with helium atom
S. Ghosh
; Department of Physics, Jadavpur University, Kolkata, 700 032, India
A. Dhara
; Department of Physics, Jadavpur University, Kolkata, 700 032, India
C. R. Mandal
; Department of Physics, Jadavpur University, Kolkata, 700 032, India
M Purkait
; Department of Physics, Ramakrishna Mission Residential College, Narendrapur, Kolkata, 700 103, India
Sažetak
Double charge-transfer cross-sections from ground state of helium atoms by multiply-charged bare ions have been studied in the energy range 50 - 200 keV/amu to investigate the dependence of cross-sections on the charge state of different ions (He2+, Li3+, Be4+, B5+, C6+, N7+ and O8+). In our calculation, we have employed the four-body boundary-corrected continuum intermediate state (BCCIS-4B) approximation. The variation of double charge transfer cross sections of bare ions into the ground state is displayed versus the incident projectile energy. Due to the non-availability of any theoretical and experimental findings in that energy range for collision systems under study (Be4+, B5+, C6+, N7+ and O8+ + He), we can not compare the present results with other data. We have also analysed differential double-capture cross sections for the collision of a-particle with helium atom at 1500 keV. The obtained results for the differential double-capture cross sections into the ground state are compared with the experimental data and a satisfactory agreement has been obtained.
Ključne riječi
double capture cross sections; differential cross section; continuum state wavefunction; bare ions
Hrčak ID:
302559
URI
Datum izdavanja:
1.3.2009.
Posjeta: 170 *