Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2008-12-22
Phys.Lett.B673:5-8,2009; Erratum-ibid.B680:111,2009
Physics
Nuclear Physics
Nuclear Experiment
An error in Eq.(1) is corrected. The conclusions of the paper are not changed in any significant way. Phys.Lett.B 673 (2009) 5
Scientific paper
10.1016/j.physletb.2009.01.069 1
The pp -> pp gamma reaction has been measured at a beam energy of 310 MeV by detecting both final protons in the PROMICE-WASA facility and identifying a missing-mass peak. For those events where the pp excitation is less than 3 MeV, the final diproton is almost purely in the 1S0 state and, under these conditions, there is complete coverage in the photon c.m. angle theta_gamma. The linear behaviour observed in cos^2(theta_gamma) shows that there is almost no influence of an E2 multipole at this energy, though the E1 and M2 must be rather similar in size.
Johansson Anders
Wilkin Colin
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