Bulg. J. Phys. vol.22 no.1-2 (1995), pp. 013-021



A Model for Initial Ionization and Charge Fluctuations in 12B and 16N Ions Generated in Nuclear Muon Capture

A. Proykova1, N. Nankoff1, L. Grenacs2
1St. Kliment Ohridski University of Sofia, Department of Atomic Physics, 5 J. Bourchier Blvd., 1126 Sofia, Bulgaria
2Universite Catholique de Louvain, Institut de Physique Nucleaire Chemin de Cyclotron, 1348 Louvain-la-Neuve, Belgium
Abstract. A model for charge-change in slow ions is suggested to study charge-fluctuation influence on ion range and straggling that are functions of the electronic stopping sd. The ions 12B (16N) are generated in graphite or in (BeO, LiOH, H2O) in the reactions μ- + 12C(0+) → νμ + 12Bgs(I = 1+) and μ - + 16O(0+) → νμ + 16Ngs(I = 2-). The polarization P and alignment A of the final nuclei 12B and 16N supply information about the induced electroweak current form factors. P and A are measured via the beta decay asymmetry of the radioactive 12B and 16N with a recoil-sensitive target which thickness is optimized using the present calci.ilation of range and straggling.

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