arXiv subjects

Ranojit Das

Publications and source records attributed to Ranojit Das.

2 recordsLinked to original sources

arXiv2025

Development of a projectile charge state analyzer and 10 kV bipolar power supply for MeV energy ion - atom/molecule collision experiments

We have developed a post-collision projectile charge state analyzer (CSA) for detecting the charge state of the projectile ion following ion-atom/molecule collision. The design of the analyzer, based on electrostatic parallel plate deflector was simulated using SIMION ion optics package. We have also developed a 10 kV bipolar programmable power supply to bias the CSA electrodes. The CSA and the power supply, both, were tested in collision studies using MeV energy ion beam of proton and carbon ions at the 1.7 MV tandetron accelerator facility at IIT Kanpur.

physics.atom-ph↗

arXiv2025

Momentum imaging and kinetic energy release measurements for various fragmentation pathways in MeV energy proton collision with $SO_2$ molecule

We have studied the ionization and fragmentation of $SO_2$ molecular target in collision with 1 MeV proton beam using the technique of recoil ion momentum spectroscopy. Fragmentation dynamics of doubly charged $SO_2^{2+}$ molecular ion has been investigated in detail using Dalitz plot and Newton diagrams. We have identified concerted and sequential dissociation pathways in three body dissociation of the parent molecular ion. 3D momentum distribution of all fragment particles, including the neutral atom, were obtained along with the kinetic energy release spectra for various fragmentation channels.

physics.atom-ph↗