Muonic hydrogen cascade time and lifetime of the short-lived 2S

Ludhova, Livia; Amaro, F. D.; Antognini, A.; Biraben, F.; Cardoso, J. M. R.; Conde, C. A. N.; Dax, A.; Dhawan, S.; Fernandes, L. M. P.; Hänsch, T. W.; Hughes, V. W.; Indelicato, P.; Julien, L.; Knowles, Paul E.; Kottmann, F.; Liu, Y.-W.; Lopes, J. A. M.; Monteiro, C. M. B.; Mulhauser, Françoise; Nez, F.; Pohl, R.; Rabinowitz, P.; Santos, J. M. F. dos; Schaller, Lukas A.; Schwob, C.; Taqqu, D.; Veloso, J. F. C. A.

doi:10.1103/PhysRevA.75.040501

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Journal article

Muonic hydrogen cascade time and lifetime of the short-lived 2S

Ludhova, Livia Département de Physique, Université de Fribourg, Switzerland - Paul Scherrer Institut, Villigen-PSI, Switzerland
Amaro, F. D. Departamento de Física, Universidade de Coimbra, Portugal
Antognini, A. Max-Planck-Institut für Quantenoptik, Garching, Germany
Biraben, F. Laboratoire Kastler Brossel, ENS, Paris, France
Cardoso, J. M. R. Departamento de Física, Universidade de Coimbra, Portugal
Conde, C. A. N. Departamento de Física, Universidade de Coimbra, Portugal
Dax, A. Paul Scherrer Institut, Villigen-PSI, Switzerland - Physics Department, Yale University, New Haven, Connecticut, USA
Dhawan, S. Physics Department, Yale University, New Haven, Connecticut, USA
Fernandes, L. M. P. Departamento de Física, Universidade de Coimbra, Portugal
Hänsch, T. W. Max-Planck-Institut für Quantenoptik, Garching, Germany
Hughes, V. W. Physics Department, Yale University, New Haven, Connecticut, USA
Indelicato, P. Laboratoire Kastler Brossel, ENS, Paris, France
Julien, L. Laboratoire Kastler Brossel, ENS, Paris, France
Knowles, Paul E. Département de Physique, Université de Fribourg, Switzerland
Kottmann, F. Institut für Teilchenphysik, ETH Zürich, Switzerland
Liu, Y.-W. Physics Department, National Tsing Hua University, Hsinchu, Taiwan
Lopes, J. A. M. Departamento de Física, Universidade de Coimbra, Portugal
Monteiro, C. M. B. Departamento de Física, Universidade de Coimbra, Portugal
Mulhauser, Françoise Département de Physique, Université de Fribourg, Switzerland
Nez, F. Laboratoire Kastler Brossel, ENS, Paris, France
Pohl, R. Paul Scherrer Institut, Villigen-PSI, Switzerland - Max-Planck-Institut für Quantenoptik, Garching, Germany
Rabinowitz, P. Department of Chemistry, Princeton University, Princeton, New Jersey, USA
Santos, J. M. F. dos Departamento de Física, Universidade de Coimbra, Portugal
Schaller, Lukas A. Département de Physique, Université de Fribourg, Switzerland
Schwob, C. Laboratoire Kastler Brossel, ENS, Paris, France
Taqqu, D. Paul Scherrer Institut, Villigen-PSI, Switzerland
Veloso, J. F. C. A. Departamento de Física, Universidade de Coimbra, Portugal

04.04.2007

Published in:

Physical Review A. - 2007, vol. 75, p. 040501(R)

English Metastable 2S muonic-hydrogen atoms undergo collisional 2S quenching, with rates which depend strongly on whether the µp kinetic energy is above or below the 2S -< 2P energy threshold. Above threshold, collisional 2S -< 2P excitation followed by fast radiative 2P -< 1S deexcitation is allowed. The corresponding short-lived µp(2S) component was measured at 0.6 hPa H₂ room-temperature gas pressure, with lifetime ***Missing image substitution*** _2S^short=165 _-29⁺³⁸ ns (i.e., ***Missing image substitution*** _2S^quench=7.9 _-1.6^+1.8×10¹² s⁻¹ at liquid-hydrogen density) and population ε _2S^short=1.70 _-0.56^+0.80% (per µp atom). In addition, a value of the µp cascade time, T _cas^{mu p}=(37±5) ns, was found.

Faculty

Faculté des sciences et de médecine

Department

Département de Physique

Language

English

Classification

Physics

License

License undefined

Identifiers

RERO DOC 8278
DOI 10.1103/PhysRevA.75.040501

Persistent URL

https://folia.unifr.ch/unifr/documents/300423

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