Absolute Voltage Determination of Three Nuclear Reactions

Neutron-Hydrogen Mass Difference from theT3(p,n)He3Taschek1, Jarvis2, Argo3 et al. 1949Phys. Rev.17010View full textAdd to dashboardCite

“…[2][3][4][5][6] The "half-lives" found agree in order of magnitude with those found by us in the counter tube. The indication is, therefore, that when a Geiger counter is subjected to voltages above its plateau the same general phenomenon occurs, but on a much smaller scale, amounting to only a small number of electrons per second.…”

“…1 The absolute value of the threshold energy was established relative to the highly accurate A\(p,y) resonance at 993.3 kev quoted by Herb, Snowden, and Sala. 2 An assembly carrying the tritium-zirconium plate, a piece of clean ^f-inch aluminum, a LiF crystal, and a zirconium metal blank allowed rapid interchange of targets in the vacuum. A large liquid air trap was placed immediately in front of the targets, all of which were thick for protons in our energy range.…”

Study of theC14(p, n)N14andSanders1 1956Phys. Rev.683312View full textAdd to dashboardCite

“…10 First-order relativistic corrections 11 were applied to obtain the particle energy. The calibration constant was observed to shift system-atically during the course of a day's operation by an amount of the order of 0.1%.…”

A high precision beam-foil meanlife measurement of the 1s 3p 1 P level in He I

“…The other method for velocity determination employed a Danfysik 50cm radius 90 ~ electrostatic analyzer which was mounted at the end of the target chamber. As in Reference 6, we calibrated the analyzer, which is capable of 0.1% precision in velocity determination [8], by means of the 3,889A quantum beat pattern.…”