Elsevier

Nuclear Physics A

Volume 340, Issue 2, 19 May 1980, Pages 240-248
Nuclear Physics A

Pionic K X-rays in liquid 3He

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Abstract

Energies and lorentzian widths of pionic K X-ray transitions have been measured in liquid 3He with improved accuracy. The strong interaction on the π3He 1s level is found to be attractive and to produce an increase in the K transition energies of 34 ± 4 eV; the measured lorentzian width is 36 ±7 eV. Measured values are also presented for K X-ray energies in liquid π4He and μ4He, the lorentzian width of the 1s level in π4He, and relative intensities of K X-ray transitions in π3He, π4He and μ4He. The measurements are compared with those of others and with recent theoretical calculations.

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    Supported in part by the Natural Sciences and Engineering Research Council of Canada.

    Present address: National Research Council, Ottawa, Ontario, Canada K1A OR6.

    ∗∗

    Present address: Korea Nuclear Fuel Development Institute, PO Box 311, Daejon, Korea.

    ∗∗∗

    Present address: TRIUMF, Vancouver, BC, Canada V6T 2A3.

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