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Russia withdraws from 25-year-old weapons-grade plutonium agreement
Russia’s lower house of Parliament, the State Duma, approved a measure to withdraw from a 25-year-old agreement with the United States to cut back on the leftover plutonium from Cold War–era nuclear weapons.
A. Tsechanski, G. Shani
Fusion Science and Technology | Volume 7 | Number 1 | January 1985 | Pages 125-136
Technical Paper | Experimental Device | doi.org/10.13182/FST85-A24524
Articles are hosted by Taylor and Francis Online.
A simple method for the determination of the energetic parameters of the T(d,n)4He neutron beam from a solid titanium-tritium target is described. The energetic parameters under consideration are: the value of the neutron energy, the neutron energy spread in the beam, the mean deuteron interacting energy, and/or the mean deuteron energy loss in the target. The proposed method is based on an accurate measurement of the energy and the full-width at half-maximum of the T(d,n)4He neutron beam. The measurements are made at the angle under consideration and at 95 deg as a reference angle of the neutron direction relative to the deuteron beam direction. The parameters are obtained by a comparison between the measured results at these two angles. The method does not require any additional measurement equipment other than the standard system used in fast neutron spectra measurements, i.e., a 2- × 2-in. NE-213 liquid scintillator in conjunction with the FORIST unfolding procedure to process the proton recoil spectra into energy spectra.