New Radioactive Isotopes produced by Nuclear Photo-Disintegration

Butement, F.D.S.

doi:10.1088/0370-1298/64/4/306

Cited by 39 publications

(16 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Butement 15 has suggested that a 17-min rhenium activity produced with 23-MeV bremsstrahlung on osmium may be due to Re 189 or Re 191 from a (y,p) reaction. Very probably, he was dealing with 19-min Re 188m , discovered soon afterward.…”

Section: From Ru To Xe 1681mentioning

confidence: 99%

Properties of RadioactiveRe189

et al. 1963

View full text Add to dashboard Cite

The new isotope Re 189 has been produced by fast-neutron irradiation of osmium and by the (a,p) reaction on tungsten. The rhenium was separated chemically from the target material. Beta-ray, gamma-ray, and internal conversion spectra have been measured. The mass assignment is confirmed by the observation of eleven electromagnetic transitions in the Os 189 daughter, including the 30.8-keV isomeric transition (6h), all of which were known from the decay of Ir 189 . Rhenium-189 has a half-life of 23.4±1.0 h and emits betaray groups with end-point energies 1000, 780, and 725 keV, and probably others. Results of coincidence measurements lead to some new information about the level scheme of Os 189 . The effects of the expected rotation-particle coupling between low-lying K-l/2 and K=3/2 bands in Os 189 are discussed.

show abstract

Section: From Ru To Xe 1681mentioning

confidence: 99%

Properties of RadioactiveRe189

et al. 1963

View full text Add to dashboard Cite

show abstract

“…The observed half-life of 9.03 min is in agreement with the currently accepted value of 8.75 (8) min. The previous assignment mentioned in the quote refers to two papers by Butement where a half-life of 8 min was assigned to either 143 Sm or 146 Sm [36,37]. In the second paper [37] Butement states that the observation is consistent with an assignment to 143 Sm, however, in the summary table both isotopes are listed as possibilities.…”

Section: Smmentioning

confidence: 99%

“…The previous assignment mentioned in the quote refers to two papers by Butement where a half-life of 8 min was assigned to either 143 Sm or 146 Sm [36,37]. In the second paper [37] Butement states that the observation is consistent with an assignment to 143 Sm, however, in the summary table both isotopes are listed as possibilities. Only two weeks later the assignment of a 8.3 min half-life to 143 Sm was independently reported by Mirnik and Aten [38].…”

Section: Smmentioning

confidence: 99%

“…In the original paper[36] a probable assignment was only given in a table. More details were reported in the subsequent publication[72]:"The activity showed a nearly logarithmic decay with an apparent half-life of 12 hours. Such a decay, resulting from two slightly different half-lives, is difficult to resolve accurately unless one component is known.…”

mentioning

confidence: 98%

“…The observed half-life of ∼120 d is close to the currently accepted value of 93.1(4) d. Previous tentative assignments of a 14 d half-life[69,70] to 149 Eu were evidently incorrect. Eu was observed by Butement in 1950 as reported in "New radioactive isotopes produced by nuclear photodisintegration"[36].150 Eu was produced through irradiation of europium oxide by 23 MeV x-rays from a synchrotron in the photonuclear reaction 151 Eu(γ,n) and chemically separated from other resultant isotopes[72]. In the original paper[36] a probable assignment was only given in a table.…”

mentioning

confidence: 99%

See 2 more Smart Citations