Nuclear data sheets for A = 173

Shirley, V.S.

doi:10.1016/s0090-3752(88)80129-7

Cited by 21 publications

(10 citation statements)

References 95 publications

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“…As previously, the detection efficiencies were calculated with the EGSnrc simulation package. Gamma-ray emission intensities of γ's expected in deexcitation processes, are taken as: 176 Hf -η(γ 78.7 keV) = 10.6% [18]; 177 Hf -η(γ 78.6 keV) = 12.5% [19]; 178 Hf -η(γ 76.5 keV) = 9.6% [20]; 180 Hf -η(γ 82.1 keV) = 12.4% [21].…”

Section: Search For α Decay Of Other Hafnium Isotopesmentioning

confidence: 99%

First search for $$\alpha $$ decays of naturally occurring Hf nuclides with emission of $$\gamma $$ quanta

et al. 2020

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The first ever search for α decays to the first excited state in Yb was performed for six isotopes of hafnium (174, 176, 177, 178, 179, 180) using a high purity Hf-sample of natural isotopic abundance with a mass of 179.8 g. For 179 Hf, also α decay to the ground state of 175 Yb was searched for thanks to the β-instability of the daughter nuclide 175 Yb. The measurements were conducted using an ultra low-background HPGe-detector system located 225 m underground. After 75 d of data taking no decays were detected but lower bounds for the half-lives of the decays were derived on the level of lim T 1/2 ∼ 10 15 − 10 18 a. The decay with the shortest half-life based on theoretical calculation is the decay of 174 Hf to the first 2 + 84.3 keV excited level of 170 Yb. The experimental lower bound was found to be T 1/2 ≥ 3.3 × 10 15 a.

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Section: Search For α Decay Of Other Hafnium Isotopesmentioning

confidence: 99%

First search for $$\alpha $$ decays of naturally occurring Hf nuclides with emission of $$\gamma $$ quanta

et al. 2020

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“…In the fifth and sixth columns, E and B(λL, I g → I e ) denote the nuclear excitation energy and the reduced transition probability, respectively, taken from Refs [33][34][35][36][37]…”

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confidence: 99%

Electric-dipole-forbidden nuclear transitions driven by super-intense laser fields

2008

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Electric-dipole-forbidden transitions of nuclei interacting with super-intense laser fields are investigated by considering stable isotopes with suitable low-lying first excited states. Different classes of transitions are identified, and all magnetic sublevels corresponding to the near-resonantly driven nuclear transition are included in the description of the nuclear quantum system. We find that large transition matrix elements and convenient resonance energies qualify nuclear M1 transitions as good candidates for the coherent driving of nuclei. We discuss the implications of resonant interaction of intense laser fields with nuclei beyond the dipole approximation for the controlled preparation of excited nuclear states and important aspects of possible experiments aimed at observing these effects.

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“…The decay data of the investigated reaction products were compiled in the ENSDF library [41][42][43][44][45][46][47][48][49], which was retrieved from the NuDat-2.6 interface [50], and they are summarized in Table 1. The Q-values and threshold energies were calculated by the Q-tool system [51] on the basis of the atomic mass evaluation by Audi and Meng [52], and they are also presented in Table 1.…”

Section: Methodsmentioning

confidence: 99%