Nuclear data sheets for A = 134

Henry, E. A.

doi:10.1016/s0090-3752(75)80037-8

Cited by 21 publications

(3 citation statements)

References 148 publications

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“…Level systematics of the even-even N=78 nuclei. Sources of data are as follows: 13~ [38], 13ZXe [39], ~34Ba [40], 136Ce [16], 138Nd [present work and 16], ~4~ [41,42] and 142Gd [41] 1,842.9 keV which has been assigned a J~=2 +, 3 + or 4 + could be the 4 + member of the quasi-gamma band. This possibility is consistent with the gammadecay pattern of the state.…”

Section: -130tementioning

confidence: 96%

Structure of even-even138Nd from the decay of138Pm

1981

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The structure of 13SNd is investigated through the fi+-decay of 138pm, whose decay half-life is measured to be 3.24_+0.05 min. A level structure comprising 27 excited states and 52 transitions is constructed. With the help of deduced ft values and internal conversion coefficients, spin-parity assignments are made to many states in 138Nd and to the ground states of 138pm. From the positron end-point energy measurement, the total decay energy is determined to be 5.4 +_0.2 MeV, which is compared with the predictions of several mass formulae and with the decay energy systematics of the N = 77 isotones. The structure of 138Nd is discussed in the light of nuclear systematics of the N = 78 isotones.

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Section: -130tementioning

confidence: 96%

Structure of even-even138Nd from the decay of138Pm

1981

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“…The decay properties of ~3~ have been investigated thoroughly by us [19] and those of 134La and 136La have been studied previously [see Refs. 22,23]. A list of energies and relative intensities of 7-rays assigned to 129La is presented in Table 1.…”

Section: Resultsmentioning

confidence: 99%

Structure of129Ba from the decay of129La

1979

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The structure of lZ9Ba is investigated through the beta decay of lZ9La, whose half-life is measured to be 11.6+0.2m. The decay properties are studied by means of beta, gamma and conversion electron spectroscopy techniques. Many transitions are observed and a level scheme of 129Ba with deduced J~ values is proposed. The total decay energy of 129Ba is measured to be 3.72_+0.05MeV, which is compared with predictions of mass formulae. Low-lying structure of 129Ba is discussed in terms of collective models.

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“…17) for 3 Ce-La and our y-ray intensities from (20) 0.14(3) 0.18 (3) 0.21 (7) 0.08 (2) 0.034 (8) Where a combination of these methods was used to locate a level, it is listed above in each category. Parity assignments of several of the levels in '~Ba were made with the aid of the K-electron conversion data reported by Aleksandrov et al "…”

Section: Iv~+ La Decay Schemementioning

confidence: 99%

Ba134level scheme as observed in the decay ofLa
Greenwood
¹
,
Reich
²
,
Helmer
³

et al. 1976
Phys. Rev. C
9
0
1
0
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The level scheme of even-even '"Ba has been studied from the decay of the '"Ce (75.9 h) t'"La (6.67 min) chain. Samples of '"Ce were produced by -800-MeV proton bombardment of Pr foils, followed by chemical and mass separation. y-ray energy and intensity measurements were made using Ge(Li) and Si(Li) detectors.Identification of y rays as belonging to the '"La decay was made in separate experiments using sources of ' 'La milked from the parent '"Ce activity. In this manner, -99 y-ray transitions have been associated with the '"La decay scheme. From these data and y-y coincidence measurements, a comprehensive level scheme is proposed for '"Ba, consisting of -41 excited states. Further information on the energies of levels in " Ba was derived from a subsidiary series of y-ray energy measurements using a source of ' Cs. For the '"La decay, logft values were obtained from relative x-ray, annihilation-quanta, and y-ray intensities and using intensitybalance considerations for the individual levels in ' Ba. A comparison is made of the ' Ba data with the predictions of several recent theoretical calculations dealing with even-even nuclei in this mass region.

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Nuclear data sheets for A = 134

Cited by 21 publications

References 148 publications

Structure of even-even138Nd from the decay of138Pm

Structure of even-even138Nd from the decay of138Pm

Structure of129Ba from the decay of129La

Ba134level scheme as observed in the decay ofLa
Greenwood
¹
,
Reich
²
,
Helmer
³

et al. 1976
Phys. Rev. C
9
0
1
0
View full text Add to dashboard Cite

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Nuclear data sheets for A = 134

Cited by 21 publications

References 148 publications

Structure of even-even138Nd from the decay of138Pm

Structure of even-even138Nd from the decay of138Pm

Structure of129Ba from the decay of129La

Ba134level scheme as observed in the decay ofLaGreenwood1, Reich2, Helmer3 et al. 1976Phys. Rev. C9010View full textAdd to dashboardCite

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Ba134level scheme as observed in the decay ofLa
Greenwood
¹
,
Reich
²
,
Helmer
³

et al. 1976
Phys. Rev. C
9
0
1
0
View full text Add to dashboard Cite