Search for Neutrinos from the Sun.

In PHYSICAL REVIEW LETTERS, volume 20, number 21, 20 may 1968, pp. 1205-109, the whole number in original printed wrappers. A very fine copy, Ownership signature.
The path for Raymond Davis from the beginnings in the 1950s of his search for neutrinos from the sun to the 2002 Nobel Prize was long and uncertain - see his Nobel lecture (presented by Davis’ son Andrew), reprinted in Rev. Mod. Phys. 75, 985 (2003) [free PDF]. It required the establishment of an observatory in a mine 1500 meters below ground level (to shield out other radiation that might give false signals) with a 380,000 liter tank of perchloroethylene, a cleaning fluid. The chlorine 37 nucleus captures a neutrino and emits an electron, producing argon 37, which is then detected in a complex process. This requires a precise calculation of the theoretical production rate of solar neutrinos according to models of the solar interior. The vital theory was carried out by John Bahcall and coworkers over many years, in a long collaboration with Davis. The Letters presented here give initial results from the experiment and their interpretation. The solar neutrino puzzle, that only about one third the expected number of neutrinos was found by Davis, gathered over the years a greater measure of precision.
. For the resolution, which contributed not only to the understanding of the sun’s interior but to the nature of neutrinos themselves, see Davis’ Nobel lecture and Phys. Rev. Focus 10, story 18.

The 2002 Nobel Prize was awarded to Raymond Davis and Masatoshi Koshiba for the development of neutrino astronomy, and to Riccardo Giacconi for the discovery of cosmic x-ray sources (see the 1962 Milestones). " http://journals.aps.org/prl/50years/milestones Letters from the Past - A PRL Retrospective".
Also in this number: John N. Bahcall, Neta A. Bahcall, and Giora Shaviv "Present Status of the Theoretical Predictions for the 37Cl Solar-Neutrino Experiment ", pp. 1209-1212.