On the Fermi Theory of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>β</mml:mi></mml:math>-Radioactivity. II. The "Forbidden" Spectra

Konopinski, E. J.; Uhlenbeck, G. E.

doi:10.1103/physrev.60.308

Cited by 264 publications

(42 citation statements)

References 24 publications

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“…The influence of the phase space factor (f ) favors the decays with high decay energy independent of the transition matrix elements. The forbidden transitions [8] are determined by higher order effects and have at least two orders of magnitude smaller matrix elements than the first order (allowed) transitions. Typically, the decay properties of neutron-rich nuclei reveal significant β-branching ratios to the levels at low excitation energy.…”

Section: Introductionmentioning

confidence: 99%

Reexamining Gamow-Teller decays nearNi78

Alshudifat¹,

Grzywacz²,

Madurga³

et al. 2016

Phys. Rev. C

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Decays of neutron-rich nuclei 82,83 Zn and 82,83 Ga produced in proton-induced fission of 238 U were studied at the Holifield Radioactive Ion Beam Facility (HRIBF) using on-line mass separation and β-γ spectroscopy techniques. New γ-ray transitions were identified and level schemes, which include states at high excitation energies in the range between 3 to 7 MeV were constructed. These high energy levels were identified to be populated through allowed Gamow-Teller β-transitions, and their structure was interpreted with new shell model calculations. A β-delayed neutron branching ratio of 69±7% was deduced for 82 Zn and revised β-decay half-life values of 82 Zn (155(17)(20) ms) and 83 Zn (122(28) ms) were determined.

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Section: Introductionmentioning

confidence: 99%

Reexamining Gamow-Teller decays nearNi78

Alshudifat¹,

Grzywacz²,

Madurga³

et al. 2016

Phys. Rev. C

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“…The present experimental results are compared with the theoretical spectra of KUB [1,2], Chang and Falkoff [3], Nilsson [4], Lewis and Ford [5], Ford and Martin [6] and M. KUB [23,24] theories.…”

Section: Introductionmentioning

confidence: 99%

“…probability were carried out after including the shape correction factor, suggested by Konopinski and Uhlenbeck [23,24] to the theory of Nilsson (where Nilsson calculations are the best approximation of the I.B. spectrum for an allowed /~-transition).…”

Section: Introductionmentioning

confidence: 99%

“…Their experimental data in the energy interval 80 to 700 KeV were compared with the theoretical spectra of KUB [1,2], LF [5], and of Chang and Falkoff [3]. The authors [25] suggested that, it would be interesting to see the comparison of the results with a theory developed for secondforbidden transitions with different types of fl-interactions including the detour transions [6,23,24].…”

Section: Introductionmentioning

confidence: 99%

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Internal Bremsstrahlung accompanying non-unique second-forbidden?-decay of36CL

Basha¹,

Khalil²,

Hussein³

et al. 1991

Z. Physik A - Hadrons and Nuclei

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The inner Brernsstrahlung spectrum (I.B.) associated wih the non-unique second forbidden /%transition of 36C1 was measured using a single channel NaI (T1) scintillation spectrometer. After making all the necessary corrections, the experimental results were compared with the corresponding theoretical distributions due to the KUB, Lewis and Ford, Nilsson, Ford and Martin and Chang and Falkoff. Also a comparison with those calculated according to Nilsson theory after applying the shape correction factor (M. KUB) was done. The measured spectrum is found to show fairly good agreement with M. KUB theory and its found to deviate therafter from all five theories. PACS: 23.40. -s; 23.90. + w

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“…This calculation is straight:fo~vard but very tedious. The ~esults :for the various cases have been g iven by Konopinski and Uhlenbeck (1941), Greuling (1942) and Pursey (1951).…”

Section: ( 23 )mentioning

confidence: 99%

The electric quadrupole interaction in beta decay

Pearson

Preston

1960

Nuclear Physics

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Submitted t o the Faculty -a£ Graduate StudiesSCOPE AlTD CONTE1fl'S l Although it has been customary in beta-decay the ory to assuine t hat t he f ield in which the decay elec t ron moves is s pherica lly symmetric a l , t here is o~ten a strong quadrupole i nt era c tion, compar ab le in magnitude at the nuclear surface to t he I c entral i nter a ction. This will couple together different angular momentum states of both the electron and t he daueht er nucleus.In t h is work tho wave functions of t hese c oupled s t ates have been obtained by an ess entially exac t s olution of the Dirac equation ~or an electron in a non-central potential. It was f ound t hat t he c oupling bet-'11een different dauehter 11uclear states was 17o a t t he very most, >rhich is i 1wufficient to a ccount for some observed anomal ies ·in branched decays of strongly deforme d nuclei.(ii)

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On the Fermi Theory ofβ-Radioactivity. II. The "Forbidden" Spectra

Cited by 264 publications

References 24 publications

Reexamining Gamow-Teller decays nearNi78

Reexamining Gamow-Teller decays nearNi78

Internal Bremsstrahlung accompanying non-unique second-forbidden?-decay of36CL

The electric quadrupole interaction in beta decay

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