6533b874fe1ef96bd12d5fbe
RESEARCH PRODUCT
A Method for Measurements of the Total 2H(γ,π−)PP Cross Sections at Threshold
F. KleinB. SchochG. Lührssubject
Nuclear physicsPhysicsCross section (physics)Time of flightQuality (physics)DeuteriumNeutron detectionNeutronMonochromatic colorPhoton beamdescription
In recent years measurements of the total cross section for the reactions 2H(γ,π+ nn) and 2H(γ,π0)2H close to the production threshold were performed1. For the 2H(γ,π−)pp reaction data of similar good quality doesn’t exist. In this paper a method is prescribed and the feasibility for the reaction 2H(γ,π−)pp is demonstrated. Figure 1 shows the principle: The photon beam hits a liquid or high pressured gas target of 2H. π− are created on the deuteron and stopped in the same target cell. The major part of the tt are captured π− are captured by deuterons via the reaction 2H(π−,n)n. The energy is shared equally by the two neutrons (En= 68.2 MeV). One of these monochromatic neutrons is detected by a neutron detector using the time of flight method.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1979-01-01 |