Temporal evolution of electron cloud in a cylindrical Penning trap at room temperature

J Nandi; A K Sikdar; A Kumar; S Alam; P Das; A Ray

doi:10.1063/5.0194917

Temporal evolution of electron cloud in a cylindrical Penning trap at room temperature

Rev Sci Instrum. 2024 Apr 1;95(4):043202. doi: 10.1063/5.0194917.

Authors

J Nandi^{1

2}, A K Sikdar^{1

2}, A Kumar³, S Alam³, P Das^{1

2}, A Ray¹

Affiliations

¹ Variable Energy Cyclotron Centre, 1/AF Bidhannagar, Kolkata 700064, India.
² Homi Bhabha National Institute, 2nd Floor, BARC Training School Complex, Anushaktinagar, Mumbai, Maharashtra 400094, India.
³ Indian Institute of Technology, Kharagpur, West Bengal 721302, India.

PMID: 38651988
DOI: 10.1063/5.0194917

Abstract

The temporal evolution of the electron cloud at room temperature has been recorded through a resonance circuit by observing the axial oscillation frequency of its center of mass. The electron cloud undergoes radial expansion by interacting with the residual gas molecules, and it is finally lost upon hitting the Penning trap electrodes. It has been confirmed through detailed experimental investigations that the unique temporal pattern of frequency variation is a consequence of the cloud's radial expansion. Consequently, this approach offers a non-destructive means for single-shot detection, enabling continuous monitoring of the electron cloud's radial expansion during the confinement time. This technique offers a significant advantage over its destructive alternatives.