Decay ofCa38

Branching of Transitions in Some Mirror Nuclei

“…Recent determinations of the half-lives of parent mirror nuclides have been made by Welch (10,11), Kistner and co workers (12, 13, 14, 15), Mihailovic and Povh (l6), Arnell and co-workers (17), and Cline and Chagnon (18). There is excellent agreement between these determinations, indicating that the total transition probabilities of the mirror nuclei are now well known.…”

Discovery of the calcium, indium, tin, and platinum isotopes

“…"The value obtained for the 40 Ca(p,t) 38 Ca Q value is -20.459±0.025 MeV. " In 1957 a half-life measurement for 38 Ca of 0.66 s produced in the 40 Ca(γ,2n) reaction was based on the observation of a 3.5 MeV γ [10] which could not be confirmed [11]. Another experiment using the same reaction relied on the 1957 measurement and did not identify 38 Ca independently [12].…”

Photodisintegration of Calcium-40

“…The dosage was monitored with a thick walled aluminum ionization chamber. The charge produced in the chamber was The decay scheme of the major reaction products Is shown in Figure 13 (45). In Table 5 a more complete list of the reactions which will be generated when calcium is bombarded by high energy photons Is given.…”

“…Decay scheme for major Ca^^ photoproductsNote that the decay of Ca can proceed by two paths. How ever only 0.1^ of the decays proceed through emission of the 3.5 Mev gamma ray(45).3 OPlease notice also that the Ca decay ultimately leads to two positrons. This implies that during the normal counting procedure several counts may be registered for each Ca?^ nucleus produced.…”