Angular distribution measurements of pion single charge exchange in deuterium and hydrogen

Journal Article · Thu Apr 01 04:00:00 EST 1993 · Bulletin of the American Physical Society

OSTI ID:243614

Park, H T; Matthews, J L; Pate, S F ^[1]

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1. and others

Angular distributions of both the d({pi}{sup {minus}},{pi}{sup 0})nn and p({pi}{sup {minus}},{pi}{sup 0})n reactions covering {theta}{sub {pi}{sup 0}}{sup lab} =0{degrees} - 150{degrees} have been measured at incident pion energies of 164, 263, and 371 MeV. No previous measurements of the deuterium SCX cross section exist between 164 MeV and 500 MeV. These new data will aid the authors in finding evidence for modification of the SCX process beyond the impulse approximation in this simple three body system. This is the first experiment to use the newly build Neutral Meson Spectrometer at LAMPF. The authors used one {open_quotes}crate{close_quotes} of 60 CsI crystals to detect both photons from the {pi}{sup 0} decay, without the benefit of any converters or tracking wire chambers. The acceptance of the detector was calculated using the EGS code to model the electromagnetic shower process. The luminosity was measured by counting the incoming {pi}{sup {minus}} flux ({approximately}3x10{sup 5} per second, instantaneous) with a set of in-beam scintillators and by using a set of well-understood solid targets of CH{sub 2}, CD{sub 2}, and C, providing a reliable normalization. Preliminary results will be shown.

• OSTI ID: 243614
• Report Number(s): CONF-9304297--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 2 Vol. 38; ISSN 0003-0503; ISSN BAPSA6
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANGULAR DISTRIBUTION
CHARGE EXCHANGE
DEUTERIUM TARGET
HYDROGEN 1 TARGET
MEV RANGE 100-1000
NEUTRONS
PION MINUS REACTIONS
PIONS NEUTRAL