Positron scattering from polar molecules: Rotovibrationally inelastic collisions with CO targets

Gianturco, F. A.; Mukherjee, Tapas; Paioletti, P.

doi:10.1103/physreva.56.3638

Cited by 46 publications

(38 citation statements)

References 39 publications

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“…Especially in the low-energy region where the projectile spends a longer time with the target molecule, the coupling between the electronic and rovibrational motions is relevant and must be adequately treated. To tackle this situation, approaches with different coupling schemes, namely, the adiabatic nuclei (AN) model [5], the rotational laboratory-frame close-coupling (LFCC) approximation [6][7][8][9], the body-frame vibrational close-coupling (BFVCC) approximation [6][7][8][9], etc, can be employed in such studies. However, the applicability of the different theoretical methods depends on the energy of the incident particle.…”

Section: Introductionmentioning

confidence: 99%

Vibrational cross sections for positron scattering by nitrogen molecules

et al. 2010

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We present a systematic study of low-energy positron collision with nitrogen molecules. Vibrational elastic and excitation cross sections are calculated using the multichannel version of the continued fractions method in the close-coupling scheme for the positron incident energy up to 20 eV. The interaction potential is treated within the static-correlation-polarization approximation. The comparison of our calculated data with existing theoretical and experimental results is encouraging.

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Section: Introductionmentioning

confidence: 99%

Vibrational cross sections for positron scattering by nitrogen molecules

et al. 2010

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“…The so called 'Positron Correlation Polarization' (PCOP) potential, which includes the short-range dynamical effects in addition to the long range part of the distortion of the target, has already been employed by some theoreticians to predict reasonable results both for atom and molecules. The actual details of this model have been discussed by Boronski and Nieminen [9] and Gianturco et al [10]. Here we have used this PCOP model correlationpolarization potential.…”

Section: 2mentioning

confidence: 95%

Positron hydrogen molecule scattering under Ro‐vibrational LFCC scheme using PCOP potential below the electronic excitation threshold

Mukherjee¹,

Sarkar²

2009

Phys. Status Solidi (c)

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Recently we have presented a Laboratory Frame Ro‐Vibrational Close Coupling (LFCC) calculation for positron hydrogen molecule scattering process using Positron Correlation Polarization (PCOP) Potential and discussed the results below positronium formation threshold (Mukherjee and Sarkar, J. Phys. B 41 125201 (2008) [1]). In the present article we have reported total (integrated) cross sections as well as vibrational excitation cross sections in higher positron energy region below the first electronic excitation threshold of hydrogen molecule for same system with same coupling scheme. The results are compared with the existing elaborate theories and the measured values. In the reported energy region the present total cross sections agree well with one of the measured values but differ with other. However, the present theoretical values for 0 → 1 and 0 → 2 vibrational excitation cross sections vary appreciably with the other results. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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“…Figure 1. ICS for positron scattering by CO. Blue curve: present calculation; red curve: present calculation with f-type orbital; green curve: data of [5]; black circles: data of [6]; purple circles: data of [7].…”

Section: Related Contentmentioning

confidence: 99%