# Ionization cross sections of Be[sup 2+], B[sup 3+] and C[sup 4+] by electron impact

## Related Articles

- Comment on â€˜â€˜The exactness of the extended Koopmansâ€™ theorem: A numerical studyâ€™â€™ [J. Chem. Phys. 98, 3999 (1993)]. Morrison, Robert C. // Journal of Chemical Physics;10/15/1993, Vol. 99 Issue 8, p6221
Recent systematic, numerical calculations by Sundholm and Olsen [J. Chem. Phys. 98, 3999 (1993)] support the proof that the lowest ionization potential can in principle be obtained exactly using the extended Koopmansâ€™ theorem. Because of the nature of their calculations it cannot be...

- Response to â€˜â€˜Comment on â€˜The exactness of the extended Koopmansâ€™ theorem: A numerical studyâ€™â€™ [J. Chem. Phys. 99, 6221 (1993)]. Sundholm, Dage; Olsen, Jeppe // Journal of Chemical Physics;10/15/1993, Vol. 99 Issue 8, p6222
The exactness of the extended Koopmansâ€™ theorem (EKT) has been studied by performing extensive multiconfiguration Hartreeâ€“Fock and configuration interaction calculations on excited states of Be and Be+. The results show that the EKT ionization potential for the Be(1S) to Be+(2P)...

- Electron impact total ionization cross sections of beryllium and boron isoelectronic ions. Talukder, M. R. // Applied Physics B: Lasers & Optics;Nov2008, Vol. 93 Issue 2/3, p567
A simple user-friendly empirical formula is proposed to calculate the electron impact total single ionization cross sections of beryllium-like Be, B+, C2+, N3+, O4+, Ne6+, Fe22+, Hg76+, and U88+ and boron-like B, C+, N2+, O3+, Ne5+, Fe21+, Kr31+, and Xe49+ targets. A simplified and modified...

- Ionization and fragmentation of C[sub 60] with sub-50 fs laser pulses. Tchaplyguine, M.; Hoffmann, K.; Du¨hr, O.; Hohmann, H.; Korn, G.; Rottke, H.; Wittmann, M.; Hertel, I. V.; Campbell, E. E. B. // Journal of Chemical Physics;2/8/2000, Vol. 112 Issue 6
Gas-phase C[sub 60] photoionization and photofragmentation experiments were performed using a sub-50 fs Ti Sapphire laser system and reflectron time-of-flight (RETOF) mass spectrometer. The dependence of the C[sub 60][sup +] and C[sub 60][sup 2+] signals on the laser intensity for the...

- Ionization potentials of CH2: A comparison of the multiconfigurational spin tensor electron propagator method with benchmark full configuration interaction and large scale multireference configuration interaction calculations. Nichols, Jeffrey A.; Heryadi, Dodi; Yeager, Danny L.; Golab, Joseph T. // Journal of Chemical Physics;2/15/1994, Vol. 100 Issue 4, p2947
Using the same basis sets and geometries as were previously used in â€˜â€˜benchmarkâ€™â€™ full configuration interaction (FCI) calculations we compare the multiconfigurational spin tensor electron propagator method (MCSTEP) with FCI for the vertical ionization potentials (IPs)...

- Core ionization energies of carbon-nitrogen molecules and solids. Snis, A.; Matar, S.F. // Journal of Chemical Physics;12/1/1999, Vol. 111 Issue 21, p9678
Investigates the core ionization energies of carbon-nitrogen molecules and solids. Calculations of the core ionization energies of the model molecules using the self consistent field method; Molecular calculations; Bulk calculations.

- 2+1 resonantly enhanced multiphoton ionization of CO via the E 1Î â€“X 1Î£+ transition: From measured ion signals to quantitative population distributions. Hines, Melissa A.; Michelsen, Hope A.; Zare, Richard N. // Journal of Chemical Physics;12/15/1990, Vol. 93 Issue 12, p8557
The 2+1 resonantly enhanced multiphoton ionization (REMPI) spectrum of the CO E 1Î â€“X 1Î£+ (0,0) transition is used to determine ground state rotational populations with a detection sensitivity of approximately 3Ã—106 molecules per quantum state per cm3. Low rotational states of CO...

- Screening effects on the degree of ionization and hole mobility for p-type Si and Ge. Chun, S. K. // Journal of Applied Physics;10/15/1996, Vol. 80 Issue 8, p4773
Presents information on a study that calculated the degree of ionizations for silicon and germanium with boron doping by taking into account the screening effect on the impurity energy level. Formulation for relaxation time of the acoustic phonon scattering; Calculation of the hole mobility for...

- Angle-resolved photoelectron and photoion study on the shape resonance in the B 1 s ionization... Shimizu, Y.; Ueda, K.; Chiba, H.; Ohmori, K.; Okunishi, M.; Sato, Y.; Hayaishi, T. // Journal of Chemical Physics;8/15/1997, Vol. 107 Issue 7, p2415
Investigates the e' shape resonance above the B 1s ionization threshold of BF[sub 3]. Use of angle resolved photoelectron and photoion spectroscopy in the study; Agreement of the results with a theoretical prediction.