X-Ray Emission during the Muonic Cascade in Hydrogen

B. Lauss; P. Ackerbauer; W. H. Breunlich; B. Gartner; M. Jeitler; P. Kammel; J. Marton; W. Prymas; J. Zmeskal; D. Chatellard; J.-P. Egger; E. Jeannet; H. Daniel; F. J. Hartmann; A. Kosak; C. Petitjean

doi:10.1103/PhysRevLett.80.3041

X-Ray Emission during the Muonic Cascade in Hydrogen

B. Lauss, P. Ackerbauer, W. H. Breunlich, B. Gartner, M. Jeitler, P. Kammel, J. Marton, W. Prymas, J. Zmeskal, D. Chatellard, J.-P. Egger, E. Jeannet, H. Daniel, F. J. Hartmann, A. Kosak, and C. Petitjean

Phys. Rev. Lett. 80, 3041 – Published 6 April 1998

Abstract

We report our investigations of x rays emitted during the muonic cascade in hydrogen employing charge coupled devices as x-ray detectors. The density dependence of the relative x-ray yields for the muonic hydrogen lines ( $K_{α}$ , $K_{β}$ , and $K_{γ}$ ) has been measured at densities between 0.001 15 and 0.97 of liquid hydrogen density. In this density region collisional processes dominate the cascade down to low energy levels. A comparison with recent calculations is given in order to demonstrate the influence of Coulomb deexcitation.

Received 12 September 1997

DOI:https://doi.org/10.1103/PhysRevLett.80.3041

Authors & Affiliations

B. Lauss^*, P. Ackerbauer, W. H. Breunlich, B. Gartner, M. Jeitler, P. Kammel^†, J. Marton, W. Prymas, and J. Zmeskal

Institute for Medium Energy Physics, Austrian Academy of Sciences, Boltzmanngasse 3, A-1090 Wien, Austria

D. Chatellard, J.-P. Egger, and E. Jeannet

Institut de Physique de l'Université, CH-2000 Neuchâtel, Switzerland

H. Daniel, F. J. Hartmann, and A. Kosak

Physics Department, TU München, D-8574 Garching, Germany

C. Petitjean

Paul Scherrer Institut, CH-523 Villigen, Switzerland

^*Electronic address: lauss@amuon.imep.univie.ac.at
^†Present address: University of California and L. Berkeley National Laboratory, Berkeley, CA 94720.