Muonic hydrogen cascade time and lifetime of the short-lived 2S
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Ludhova, Livia
Département de Physique, Université de Fribourg, Switzerland - Paul Scherrer Institut, Villigen-PSI, Switzerland
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Amaro, F. D.
Departamento de Física, Universidade de Coimbra, Portugal
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Antognini, A.
Max-Planck-Institut für Quantenoptik, Garching, Germany
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Biraben, F.
Laboratoire Kastler Brossel, ENS, Paris, France
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Cardoso, J. M. R.
Departamento de Física, Universidade de Coimbra, Portugal
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Conde, C. A. N.
Departamento de Física, Universidade de Coimbra, Portugal
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Dax, A.
Paul Scherrer Institut, Villigen-PSI, Switzerland - Physics Department, Yale University, New Haven, Connecticut, USA
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Dhawan, S.
Physics Department, Yale University, New Haven, Connecticut, USA
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Fernandes, L. M. P.
Departamento de Física, Universidade de Coimbra, Portugal
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Hänsch, T. W.
Max-Planck-Institut für Quantenoptik, Garching, Germany
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Hughes, V. W.
Physics Department, Yale University, New Haven, Connecticut, USA
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Indelicato, P.
Laboratoire Kastler Brossel, ENS, Paris, France
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Julien, L.
Laboratoire Kastler Brossel, ENS, Paris, France
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Knowles, Paul E.
Département de Physique, Université de Fribourg, Switzerland
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Kottmann, F.
Institut für Teilchenphysik, ETH Zürich, Switzerland
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Liu, Y.-W.
Physics Department, National Tsing Hua University, Hsinchu, Taiwan
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Lopes, J. A. M.
Departamento de Física, Universidade de Coimbra, Portugal
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Monteiro, C. M. B.
Departamento de Física, Universidade de Coimbra, Portugal
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Mulhauser, Françoise
Département de Physique, Université de Fribourg, Switzerland
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Nez, F.
Laboratoire Kastler Brossel, ENS, Paris, France
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Pohl, R.
Paul Scherrer Institut, Villigen-PSI, Switzerland - Max-Planck-Institut für Quantenoptik, Garching, Germany
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Rabinowitz, P.
Department of Chemistry, Princeton University, Princeton, New Jersey, USA
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Santos, J. M. F. dos
Departamento de Física, Universidade de Coimbra, Portugal
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Schaller, Lukas A.
Département de Physique, Université de Fribourg, Switzerland
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Schwob, C.
Laboratoire Kastler Brossel, ENS, Paris, France
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Taqqu, D.
Paul Scherrer Institut, Villigen-PSI, Switzerland
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Veloso, J. F. C. A.
Departamento de Física, Universidade de Coimbra, Portugal
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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*** 2Sshort=165 -29+38 ns (i.e., ***Missing image substitution*** 2Squench=7.9 -1.6+1.8×10¹² s⁻¹ at liquid-hydrogen density) and population ε 2Sshort=1.70 -0.56+0.80% (per µp atom). In addition, a value of the µp cascade time, T casmu p=(37±5) ns, was found.
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Faculty
- Faculté des sciences et de médecine
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Department
- Département de Physique
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Language
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Classification
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Physics
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License
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License undefined
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Identifiers
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Persistent URL
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https://folia.unifr.ch/unifr/documents/300423
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