*Scottish Church College*

We perform electron-molecule collision calculations involving small molecule and molecular ion targets to study electron induced processes such as elastic scattering, electronic and vibrational excitation, dissociation etc. using the R-matrix method. Our main interest lies in the of study these processes for molecules and molecular ions relevant for low temperature plasmas that occur in astrophysics, industry and edge plasmas in fusion devices such as JET, ITER etc. We also study other collision induced processes such as dissociative recombination (DR) and dissociative electron attachment (DEA) in collaboration with other groups using molecular data from our structure calculations.

We perform calculations for molecular states, both bound and resonant, using the R-matrix method. Particularly, our data on the neutral and anionic resonant states, which are known to be important for DR and DEA, are used by other groups for DR and DEA calculations.

Associate Professor Kalyan Kumar CHAKRABARTI
*Department of Mathematics, Scottish Church College, 1 & 3 Urquhart Square, Kolkata 700 006, India*

Email: kkch.atmol@gmail.com

- [1] D. A. Little et al., "Dissociative recombination of N
_{2}^{+}: An*ab initio*study",*Physical Review A***90**, 052705 (2014). - [2] K. Chakrabarti and J. Tennyson, "R-matrix calculation of bound and resonant states of BeH",
*Journal of Physics B: Atomic, Molecular and Optical Physics***48**, 235202 (2015). - [3] A. Dora, J. Tennyson and K. Chakrabarti, "Higher lying resonances in low-energy electron scattering with carbon monoxide",
*The European Physical Journal D***70**, 197 (2016). - [4] S. Niyonzima et al., "Low-energy collisions between electrons and BeH
^{+}: Cross sections and rate coefficients for all the vibrational states of the ion",*Atomic Data and Nuclear Data Tables***115-116**, 287-308 (2017). - [5] V. Laporta et al., "Theoretical resonant electron-impact vibrational excitation, dissociative recombination and dissociative excitation cross sections of ro-vibrationally excited BeH
^{+}ion",*Plasma Physics and Controlled Fusion***59**, 045008 (2017). - [6] D. O. Kashinski et al., "A theoretical study of the dissociative recombination of SH
with electrons through the^{2}Π states of SH",*The Journal of Chemical Physics***146**, 204109 (2017). - [7] K. Chakrabarti et al., "R-matrix study of electron impact excitation and dissociation of CH
^{+}ions",*Journal of Physics B: Atomic, Molecular and Optical Physics***50**, 175202 (2017). - [8] D. Gupta et al., "An R-matrix study of electron induced processes in BF
_{3}plasma",*Physics of Plasmas***24**, 123511 (2017). - [9] S. Niyonzima et al., "Low-energy collisions between electrons and BeD
^{+}",*Plasma Sources Science and Technology***27**, 025015 (2018). - [10] K. Chakrabarti et al., "Dissociative recombination of the CH
^{+}molecular ion at low energy",*Journal of Physics B: Atomic, Molecular and Optical Physics***51**, 104002 (2018).