A Determination of the Nuclear Magnetic Moment ofCo60, Using the Method of Nuclear Alignment

Alignment of Three Odd-ARare-Earth Nuclei

“…It should be pointed out that in the nuclear alignment experiments where the results have given good agreement with the ideal theoretical case this situation has obtained. [18][19][20][21][22] In the present case, however, where B»A and g x^> g w mixing between nuclear levels does occur, and it is reasonable to suppose that if the magnitude of the interaction is comparible with the hfs, the nuclear population distribution would be modified at low temperatures in such a way as to decrease the degree of alignment. In other words, the criterion given by Bleaney, 23 that the hfs should be well resolved, is not fulfilled.…”

“…An explanation for this can be readily found, however, if it is assumed that the gamma transition contains a small admixture of E2 radiation, for there is an interference term which produces a considerable change in the anisotropy. It should be pointed out that in previous nuclear alignment experiments, e.g., Co 60 , 18 ' 19 Co 58 , 20 Co 56 , 12 Mn 54 , 22 the final nucleus is even-even and therefore has zero spin in the ground state. Hence transitions to the ground state can never involve mixed radiation.…”

Magnetic resonance in Kazan and in Oxford

“…This is true also for the hyperfine structure, as shown in tected outside the cryostat. The first successful nuclear alignment experiment based on this method, was carried out later in the same year [40], and was described more fully later [41].…”

Cryomagnetism and Magnetic Resonance in Oxford Physics

“…This requires milliKelvin temperatures, but the gamma-rays can be detected outside the cryostat. The first successful experiment was carried out the same year, and described more fully later (49).…”