Details

Autor(en) / Beteiligte

• Komarov, V
• Azaryan, T
• Chiladze, D
• Dymov, S
• Dzyuba, A
• Hartmann, M
• Kacharava, A
• Keshelashvili, I
• Khoukaz, A
• Kulikov, A
• Kurbatov, V
• Macharashvili, G
• Merzliakov, S
• Mikirtychiants, S
• Papenbrock, M
• Nekipelov, M
• Rathmann, F
• Serdyuk, V
• Ströher, H
• Tsirkov, D
• Uzikov, Yu
• Wilkin, C

Titel

Observation of inverse diproton photodisintegration at intermediate energies

Ist Teil von

• Physical review letters, 2008-09, Vol.101 (10), p.102501-102501, Article 102501

Ort / Verlag

United States

Erscheinungsjahr

2008

Link zum Volltext

Quelle

APS_美国物理学会期刊

Beschreibungen/Notizen

• The fundamental reaction pp-->{pp}_{s}gamma, where {pp}_{s} is a proton pair with low excitation energy, has been observed with the ANKE spectrometer at COSY-Jülich for proton beam energies of T_{p}=0.353, 0.500, and 0.550 GeV. This is equivalent to photodisintegration of a free 1S0 diproton for photon energies E_{gamma} approximately T_{p}/2. The differential cross sections measured for c.m. angles 0 degrees <theta_{pp}<20 degrees exhibit a steep increase with angle that is compatible with E1 and E2 multipole contributions. The ratio of the measured cross sections to those of np-->gammad is on the 10;{-3}-10;{-2} level. The increase of the pp-->{pp}_{s}gamma cross section with T_{p} might reflect the influence of the Delta(1232) excitation.