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Showing 1 to 1 of 1 for “"hydrogen threshold"”.
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Photoproduction of positive pions near threshold in hydrogen
… of pi+ photoproduction cross sections very near threshold 0 To do this, a 1410 hydrogen bubble chamber was used in an X-ray beam with Emax = 230 MeV. Meson tracks could be observed from their origins in the photon beam. Only those events were used in which the '1T+ stopped and decayed in the …