The
first major experiment with the OTPC was conducted at NSCL/MSU lab in
February 2007. The main goal was the study of two-proton radioactivity
of 45Fe. The resulting full p-p correlation picture provided the first
evidence of the genuine three-body mechanism of the 2p emission. The
beta decay channels of 45Fe and 43Cr with emission of delayed protons
were observed as well. The new decay mode, beta-delayed three-proton
emission was discovered in 45Fe and 43Cr. The counting gas was a
mixture of 66% He + 32% Ar + 1% N2 + 1% CH4 at atmospheric pressure.
The CCD exposure time was between 24 and 30 ms. The list of papers with results of this experiment can be found here.
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