INVESTIGADORES
TACHINO Carmen Alejandra
artículos
Título:
Doble differential distribution of electron emission in the ionization of water molecules by fast bare oxygen ions
Autor/es:
S. BHATTACHARJEE; S. BISWAS; C. BAGDIA; M. ROYCHOWDHURY; S. NANDI; D. MISRA; J. M. MONTI; C. A. TACHINO; R. D. RIVAROLA; C. CHAMPION; L. C. TRIBEDI
Revista:
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
Editorial:
IOP PUBLISHING LTD
Referencias:
Lugar: Londres; Año: 2016 vol. 49 p. 652020 - 652020
ISSN:
0953-4075
Resumen:
The doubly differential distributions of low-energy electron emission in the ionization of water molecules under the impact of fast bare oxygen ions with energy of 48 MeV are measured. The measured data are compared with two quantum-mechanical models, i.e. the post and priorversions of the continuum distorted wave?eikonal initial state (CDW-EIS) approximation, and the first-order Born approximation with initial and final wavefunctions verifying correct boundary conditions (CB1). An overall excellent qualitative agreement is found between the data and the CDW-EIS models whereas the CB1 model showed substantial deviation. However, the detailed angular distributions display some discrepancies with both CDW-EIS models. The single differential and total cross-sections exhibit good agreement with the CDW-EIS models.The present detailed data set could also be used as an input for modeling highly charged ion induced radiation damage in living tissues, whose most abundant component is water. Similar measurements are also carried out for a projectile energy of 60 MeV. However, since the doubledifferential cross-section data show similar results the details are not provided here, except for the total ionization cross-sections results.