Volume 54, Number 3, May 2001
|Page(s)||313 - 319|
|Section||Atomic and molecular physics|
|Published online||01 December 2003|
Experimental verification of Coulomb de-excitation in pionic hydrogen
IPP, Institute for Particle Physics, ETH Zürich -
CH-8093 Zürich, Switzerland
2 PSI, Paul-Scherrer-Institut - CH-5232 Villigen-PSI, Switzerland
3 Physics Department, University of Virginia - Charlottesville, Virginia 22901, USA
Accepted: 20 February 2001
The neutron time-of-flight spectrum from the reaction was measured in order to study the acceleration mechanisms in the atomic cascade of pionic hydrogen. For the first time, discrete "high-energy"components up to about 200 were found in hydrogen gas. The earlier findings of discrete components in liquid hydrogen are confirmed in a model-independent way, and for the first time, indications of transitions with are observed.
PACS: 36.10.Gv – Mesonic atoms and molecules, hyperonic atoms and molecules / 25.80.Gn – Pion charge-exchange reactions / 13.75.Gx – Pion-baryon interactions
© EDP Sciences, 2001
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