Disintegration ofK43

Abstract

in this experiment. It should be noted, however, that the earlier experiments yield, in general, still higher values for the stopping powers than are obtained from Thompson's / values and Eqs. (2) and (3). Some of these earlier results represent average values over the whole range of the particle rather than instantaneous values. The discrepancies in earlier results are the chief justification for the use of Thompson's accurate work as a standard of comparison in this experiment. It is of interest to note that if /Ai=170ev, following the suggestion of Sachs and Richardson, 9 a calculated 9 D. C. Sachs and J. R. Richardson, Phys. Rev. 89,1163 (1953.

Capture-Gamma Determination ofV51Levels

“…Their calculations for Ca 43 *, however, were based on an earlier single-particle level-structure assumption for Ca 41 * which now appears to warrant revision. 13 Furthermore, the calculations were normalized to fit a Ca 43 * level scheme proposed by Lindquist and Mitchell [41][42][43] assigning an expected 9/2~ level at 0.81 Mev for which there is now some doubt. 44 -45 Lindquist and Mitchell point out that the exact agreement of theory with their observations is to be expected since three parameters were used to fit three levels, and a proper test of the theory would be attained if the two unobserved 11/2 and 15/2 states were to be found.…”

“…Reliable data needed on the comparable Ca 43 * states may be difficult to obtain. Unfortunately a proposed [41][42][43] J . • E .…”

Angular Distribution of Protons from theCa40(d, p)Ca41Bockelman1, Buechner2 1957Phys. Rev.42050View full textAdd to dashboardCite

“…Since the work of Braams 4 had shown the presence of closely spaced groups, the slits of the deuteron energy-defining magnet were narrowed to limit the energy spread to 10 kev, and the spectrograph aperture was narrowed to a halfangle of 2 degrees in order to guarantee that the groups would be well resolved. Figure 1 shows that this was accomplished except in the case of the closely spaced pair (18) and (19) which are separated by 18 kev at a proton energy of 8.8 Mev. The relatively high resolution used resulted in a low counting rate, necessitating longer runs; consequently, it was decided to investigate only angles of 60 degrees and less, where the previous calcium measurements appeared most instructive.…”

Atomic Masses in the Region Xenon to Europium

“…Determinations of stable atomic masses in the region about the 20, 28, and 50 proton and neutron shells have been reported. [1][2][3][4][5] The atomic mass measurements reported here deal with the mass region about the 82 neutron shell closure. Determinations of 36 atomic masses in the region ^4 = 130 to 154 and Z=54 to 63 have been made by the doublet method, employing hydrocarbon comparison ions.…”

“…This spectrometer has been described, 7 and has been used to determine a number of atomic masses. [1][2][3][4] However, instead of the original strip chart recording of data, the new null, peak-matching method of measurement is now employed. 8,9 DOUBLET MASS DIFFERENCES Table I lists the mass doublets measured and the mass differences obtained.…”