Measurement of the total and partial K-X-ray yields for the pnn- and dn-reaction channels of the π^--absorption in ^3He - Backenstoss, G.; Kowald, W.; Schwanner, I.; Weyer, H.J.; Dorr, M.; Gotta, D.; Schmidt, G.; Simons, L.M.; Ullrich, H. (Elsevier)
The total K-X-ray yield Y^K in pionic ^3He has been determined to (27 +/- 7)% by measuring a ratio of 3.44 +/- 0.29 for the simultaneously detected numbers of K-X-rays and deuterons emitted after pion absorption. Partial K-X-ray yields Y^K"d and Y^K"p corresponding to the dn- and pnn-absorption channels, respectively, have been measured by detecting coincidences between K-X-rays and deuterons or protons above 20 MeV, respectively resulting in Y^K"d=(49 +/- 5)% and Y^K"p (T"p〉=20 MeV) = (29 +/- 4)%.
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Keywords: U