Abstract
We report development of a semi-microscopic Monte Carlo code to calculate the transmission efficiency of a recoil mass spectrometer for quasi-elastic scattering. Realistic distributions of angle, energy and charge state of the forward-moving target-like ions are generated event by event. Particle trajectories are calculated employing first-order ion-optical transfer matrices. We present results for two test reactions, viz.\(^{16}\)O+\(^{116}\)Sn and \(^{58}\)Ni+\(^{116}\)Sn assuming Rutherford scattering at projectile energies near the Coulomb barrier. This work has an important application in determining barrier distributions from quasi-elastic back-scattering measurements employing recoil mass spectrometers. The code can also be utilized to simulate multi-nucleon transfer reactions and adapted for other similar recoil separators because of its modular structure.
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Data Availability Statement
This manuscript has no associated data or the data will not be deposited. [Authors’ comment: This is a theoretical study and no experimental data has been listed.]
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Acknowledgements
One of the authors (R. B.) acknowledges Council of Scientific and Industrial Research (CSIR), New Delhi for financial support via grant no. CSIR/09/760(0030)/2017-EMR-I. The authors are thankful to Dr. G. O. Rodrigues for useful discussion on ion-optical calculation.
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Biswas, R., Nath, S. Simulation of a recoil mass spectrometer for measurement of differential quasi-elastic scattering cross sections. Eur. Phys. J. A 56, 1 (2020). https://doi.org/10.1140/epja/s10050-019-00020-y
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DOI: https://doi.org/10.1140/epja/s10050-019-00020-y