Masses of Very Neutron Deficient Nuclides in the Tin Region

Płochocki, A.; Gowdy, G.M.; Kirchner, R.; Klepper, O.; Reisdorf, W.; Roeckl, E.; Tidemand-Petersson, P.; Ż̷ylicz, J.; Schrewe, U.J.; Kantus, R.; Dincklage, R. v.; Schmidt‐Ott, W. D.

doi:10.1007/978-1-4684-3716-4_41

Cited by 2 publications

(5 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This result in turn can he combined with e-decay [3] and proton-decay [8] data to yield approximate values for i~ ll2Xe,1~ and ~13Cs, the last two nuclides being beyond the proton-drip line. In this procedure, we assumed that the particle decays occur from nuclear groundstates and hence the derived mass-excess values refer to groundstates, as well.…”

Section: Summary and Discussionmentioning

confidence: 99%

“…Via groundstate 1 On leave of absence from Institute of Experimental Physics, University of Warsaw, PL-00681 Warsaw, Poland 2 Present address: Chalk River Nuclear Laboratories, Chalk River Ontario Canada KOJ 1JO 3 Present address: RIFA AB, S-16381 Stockholm, Sweden proton-decay energies [8], the mass links are extended to comprise also 1~ and 1~3Cs. These two isotopes are already lying beyond the proton drip line.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Decay properties of the new proton-rich nucleus104Sn: Mass determinations beyond the proton drip line

et al. 1985

Self Cite

View full text Add to dashboard Cite

The new proton-rich nucleus l~ was produced in a 5~ 2p2n)l~ reaction. Its half-life was measured to be 21 + 1 s. From a newly established partial decay scheme, a QEc value of ~,v,,,,a aaa+6so_ 3oo keV was estimated. The resulting mass excess value for 1~ combined with decay energies for e and proton emission, leads to mass excess values for the nuclei ~~ 1~ ll2Xe ' and ~3Cs. These mass values are compared to predictions of mass formulae.

show abstract

Section: Summary and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Decay properties of the new proton-rich nucleus104Sn: Mass determinations beyond the proton drip line

et al. 1985

Self Cite

View full text Add to dashboard Cite

show abstract

“…Also the application of a mini-orange spectrometer [-9] for measuring the spectra of internal-conversion electrons appeared to be a very important addition to our 7-ray studies. As a result, the l~ --+ 1~ decay scheme is constructed with four wellestablished GT transitions.Four GT transitions (two of which were not reported in [10,11]) have also been observed in the 1~ decay. The previous version of the 1~ decay scheme [12, 13] has essentially been confirmed with respect to GT strength.…”

mentioning

confidence: 86%

“…This limit is consistent with our previous result, both values being in disagreement with the one given by the Leuven group in an internal report [26] (see Table 3). Spins have been measured to be 7 [23,31] for the 58-min and 2 [-23] for the 40-rain state of l~ With respect to the three lowlying l~ states directly above the low-spin isomer, the results from various experiments [11][12][13]30] differ somewhat inassignment of level sequence and spins. These discrepancies, however, have no major influence on the GT strength distribution which we are concerned with here.…”

Section: Decay Energies and Decay Schemes Of 1~ And Lossnmentioning

confidence: 99%

See 1 more Smart Citation

The Gamow-Teller beta decay of neutron-deficient even isotopes of tin

Barden

Kirchner

Klepper

et al. 1988

Z. Physik A - Atomic Nuclei

Self Cite

View full text Add to dashboard Cite

With the use of the 58Ni+S~ fusion-evaporation reaction and chemically selective on-line mass separation, the EC//3 + decay of t~ was studied by ?-ray and conversionelectron spectroscopy. In the course of these studies, a new 15.7-s isomeric state of t~ was observed. Reinvestigation of the {/-decays of the two heavier even isotopes of tin, produced in the s 8Ni + 58Ni reaction and mass separated without chemical discrimination, brought new information on the decay of l~ and ~~ The QEc values of 1~ l~ and 1~ were determined to be 4550 +300 keV, 3200+100 keV and -250 <2270 keV, respectively. In the data analysis, the emphasis is put on the identification of the 0+-~ 1 + Gamow-Teller /~ transitions and determination of their strengths. For 1~176 the total Gamow-Teller strengths are measured to be 20% to 30% of that predicted by the single-particle shell model with the inclusion of pairing correlations and core polarization. Predictions of the decay properties of the as yet unobserved ~~ and l~176 are made. 23.40.Hc; 21.10.Dr; 21.10.Pc; 27.60. +j; 29.30.Kv PACS: IntroductionThis paper presents a reinvestigation of the 104, 106,1088n EC/fl+ decays carried out at the GSI mass separator on-line to the UNILAC with the application of nuclear spectroscopy techniques. In the data analysis, the emphasis is put on the identification of the 0+~ 1 + Gamow-Teller (GT) transitions and determination of their strengths. The observation of more than one GT transition in each of the three decays, and the origin of quenching of the summed GT strengths compared to prediction of the extremesingle-particle shell model (ESPSM) are discussed with reference to theoretical studies [1][2][3].The main new results are those obtained for A = 104. Compared to our preceding investigation of the isotope ~~ [4,5] (see also the Leuven results * This work is part of the Ph.D. thesis of G.-E. Rathke[6]), an essential progress in studying its decay properties has been achieved due to the application of a mass-separator ion source [7,8] which allows for a substantial suppression of the isobaric contamination. Also the application of a mini-orange spectrometer [-9] for measuring the spectra of internal-conversion electrons appeared to be a very important addition to our 7-ray studies. As a result, the l~ --+ 1~ decay scheme is constructed with four wellestablished GT transitions.Four GT transitions (two of which were not reported in [10,11]) have also been observed in the 1~ decay. The previous version of the 1~ decay scheme [12, 13] has essentially been confirmed with respect to GT strength. Finally, the results of the present work have been extrapolated to get an estimate of the decay properties for the yet unobserved isotopes 1~and doubly magic l~176

show abstract

Masses of Very Neutron Deficient Nuclides in the Tin Region

Cited by 2 publications

References 12 publications

Decay properties of the new proton-rich nucleus104Sn: Mass determinations beyond the proton drip line

Decay properties of the new proton-rich nucleus104Sn: Mass determinations beyond the proton drip line

The Gamow-Teller beta decay of neutron-deficient even isotopes of tin

Contact Info

Product

Resources

About