Charge transfer from the ground state of muonic hydrogen to 4He at room temperature

S. Tresch; R. Jacot-Guillarmod; F. Mulhauser; L. A. Schaller; L. Schellenberg; H. Schneuwly; Y.-A. Thalmann; A. Werthmüller

doi:10.1007/s100530050117

EPJ

Charge transfer from the ground state of muonic hydrogen to ⁴He at room temperature

S. Tresch^a, R. Jacot-Guillarmod, F. Mulhauser, L. A. Schaller, L. Schellenberg, H. Schneuwly, Y.-A. Thalmann and A. Werthmüller

Institut de Physique de l'Université, Pérolles, 1700 Fribourg, Switzerland

Received: 22 January 1998
Revised: 4 March 1998
Accepted: 31 March 1998
Published online: 15 May 1998

Abstract

The present status of research of muon transfer from the ground state of muonic protium to ⁴He is reviewed. The analysis of a recent measurement in a triple gas mixture of H₂+⁴He+Ne at 15 bar and room temperature is presented and the result is compared to the existing experimental and theoretical rates. The average muon transfer rate from protium to ⁴He determined from all lifetime measurements is

PACS: 36.10.Dr – Positronium, muonium, muonic atoms and molecules / 34.70.+e – Charge transfer / 82.30.Fi – Ion-molecule, ion-ion, and charge-transfer reactions