A measurement of the lifetime of the 8.4 keV level in Tm169

Sundström, T.; Sparrman, P.; Lindström, Jonas; Lindskog, J.

doi:10.1016/0031-9163(63)90220-8

Cited by 10 publications

(5 citation statements)

References 4 publications

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“…and, less strongly, the value reported by Vergnes (87). The lifetime of the 105-keV level reported by Runge et al(88) is also confirmed by the value of the lifetime reported for this level in this investigation.The measurement of the Tml°9 118-keV level lifetime confirms the value reported by Blaugrund et al(21) and the measurement of the lifetime of the 139-keV level in Tml°9 gives further confirmation to the other reported values of the lifetime of this level(74,75).…”

supporting

confidence: 89%

Some lifetime measurements of isomeric states in the rare earth region with magnetic coincidence beta-ray spectrometers

McAdams

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This report was prepared as an account of Government sponsored work. Neither the United States, nor the Commission, nor any person acting on behalf of the Commission:A. Makes any warranty or representation, expressed or implied, with respect to the accuracy, completeness, or usefulness of' the information contained in this report, or that the use of any information, apparatus, method, or process disclosed in this report may not infringe privately owned rights; or B. Assumes any liabilities with respect to the use of, or for damages resulting from the use of any information, apparatus, method, or process disclosed in this report.As used in the above, "person acting on behalf of the Commission" includes any employee or contractor of the Commission, or employee of such contractor, to the extent that such employee or contractor of the Commission, or employee of such contractor prepares, disseminates, or provides access to, any information pursuant to his employment or contract with the Commission, or his employment with such contractor.

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supporting

confidence: 89%

Some lifetime measurements of isomeric states in the rare earth region with magnetic coincidence beta-ray spectrometers

McAdams

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“…No efficiency calibration of the Si(Li)-detector is necessary below 1000 keV energy. Electron spectra recorded with an ls7Er target bombarded with 11 MeV protons are shown in Fig. 6.…”

Section: Measurements Of Internal Conversion Electrons In Ls'tmmentioning

confidence: 99%

“…The electric quadrupole moments in 167Tm were deduced using the relation between the transition probability B(E2) and the electric quadrupole moment as given by formula (l), p. 368 in ref. [9]. An average value of Qo =7.8 k0.3 b was obtained from the transitions in the ground state band.…”

Section: Electromagnetic Propertiesmentioning

confidence: 99%

“…The B(M1) transition probability for the K = 1/2 band, expressed by formula (4), p. 370 in ref. [9], was used to evaluate the difference (gx-g,) for the gyromagnetic factors gK and gR of the particle and rotational motion, respectively. Using the 106.3 and 25.8 keV M 1 transitions it was possible to solve both the (gK-gR) difference and the parameter bo from this system of two equations.…”

Section: Electromagnetic Propertiesmentioning

confidence: 99%

“…Several rotational bands have been established in the 165-167Tm isotopes. The ground state band, based on the 1/2-[411] single-particle state, is probably one of the best studied bands in the deformed nuclei and therefore offers an interesting opportunity to check the internal consistency of the Nilsson model [9]. When this work was initiated, only scarce information was available on the 1/2-[541], 3/2+[411], 5/2-[402] bands and the 9/2-[514] band was not yet identified in 16'Tm.…”

Section: Introductionmentioning

confidence: 99%

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Level Structure and Transition Probabilities in¹⁶⁵Tm and¹⁶⁷Tm

et al. 1976

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Transitions in 165Tm and 167Tm have been studied by means of the (p,nγ) and (p,2nγ) reactions. Singles gamma-ray spectra, gamma-gamma coincidences and conversion electron spectra have been recorded. The level schemes of both isotopes have partly been verified and new members of the 1/2-[541] band have been found in 167Tm. The halflives of three levels in the ground state bands have been measured using an electron-electron coincidence spectrometer: T 1/2 = 322 ± 20 ps for the I = 7/2 level in 165Tm, T 1/2 = 343 ± 15 ps for the I = 7/2 level in 167Tm and T 1/2 = 66 ± 7 ps for the I = 5/2 level in 167Tm. The electric and magnetic moments have been compared for the odd thulium isotopes. It was also shown that the quadrupole deformation ϵ2 is constant and that the systematics of the single particle states in these isotopes only may be explained by variations of the hexadecapole deformation, ϵ4 of the nuclear shape.

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