The 57Fe(t, p) 59Fe and 58Fe(d, p)59Fe reactions

McLean, K.C.; Dalgliesh, S.M.; Ipson, Stanley S.; Brown, G.E.

doi:10.1016/0375-9474(72)90525-8

Cited by 32 publications

(24 citation statements)

References 19 publications

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“…14) for 56Fe and from ref. 19) for "Fe is terrible. The ratios (Zr+ l)SE,/Zy vary by factors of at least 100 and 2000 for 56Fe and 58Fe, respectively.…”

Section: Discussionmentioning

confidence: 99%

“…The J" value of the 571 keV level had been determined by McLean et al 19) as J" = $-from (d, p) and (t, p) angular distributions. This was later put in doubt by (7) 0.20 (9) 47 ( C + 287 c-t 0 4729.5 (14) 0.07(3) ") Errors are statistical; to account for the uncertainty in the energy calibration, a systematic error of 25 ppm should be added quadratically.…”

Section: Whereas J" = $' Is Excluded In Ref 15) Whereas J" = +-Is Ementioning

confidence: 99%

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Investigation of the 56Fe(n, γ)57Fe and 58Fe(n, γ)59Fe reactions

et al. 1980

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Abstract:The y-radiation has been investigated produced by thermal neutron capture in a natural Fe sample and in a sample enriched in 5sFe. Of the 253 y-rays ascribed to the 56Fe(n, y)"Fe reaction, 19 1 have been placed in the 57Fe level scheme (of which 124 placements are new); of the 138 y-rays observed in the 58Fe(n, y)s9Fe reaction 68 have been placed (with 55 new placements). Excitation energies (with 0.02-0.7 keV error) and branching ratios have been determined of 60 bound levels in S7Fe and of 27 in 59Fe The Q-values of the s6,"Fe(n, y) reactions amount to 7646.OkO.2 and 6581.0+0.2 keV, respectively. One can conclude that J = 3 for the 2836 keV level in 57Fe, and that J" = +-for the 2570, 3072, 3104, 3160 and 3384 keV levels in 59Fe.A shell-model calculation has been performed with up to two holes in the If,,, sub-shell and particles in the 2p,,,, If,,, and 2p,,, sub-shells. The energies of low-lying ". 58, s9Fe states are reproduced with a mean deviation of 0.17 MeV. The surface-delta interaction appears superior over the Kuo-Brown interaction in explaining the electromagnetic properties of the lowest six states of "Fe. E NUCLEAR REACTIONS s6. s*Fe(n, y), E = thermal; measured E,, I?; deduced Q. 57, 59Fe levels deduced E,, y-branching, J". Enriched and natural targets.

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“…14) for 56Fe and from ref. 19) for "Fe is terrible. The ratios (Zr+ l)SE,/Zy vary by factors of at least 100 and 2000 for 56Fe and 58Fe, respectively.…”

Section: Discussionmentioning

confidence: 99%

Section: Whereas J" = $' Is Excluded In Ref 15) Whereas J" = +-Is Ementioning

confidence: 99%

Investigation of the 56Fe(n, γ)57Fe and 58Fe(n, γ)59Fe reactions

et al. 1980

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“…However, the analysis of gamma transition alone could not exclude the assignment of 3/2 − for this state. What's more, the J π of the state 571 keV is identified as 3/2 − based on the analysis of angular distribution of differential cross section in the experiment 58 Fe(d,p) and 57 Fe(t,p) [14]. In this case, the β-decay of this state will not be important because it cannot undergo allowed transition to 59 Co ground state.…”

Section: Previous Work On Thementioning

confidence: 99%

“…[14] thus the assignments of energy level of shell model calculation have been made as shown in Fig 2. We have also done calculations with alternative assignments of which 59 Fe(571 keV) state was assigned as 5/2 − thus undergoing allowed transition to 59 Co ground stateas shown in Fig. 5a.…”

Section: Uncertainties For Thementioning

confidence: 99%

β -decay rate of Fe59 in shell burning environment and its influence on the production of Fe60
Li
¹
,
Lam
²
,
Qi
³

et al. 2016
Phys. Rev. C
8
0
7
0
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We deduced the stellar β-decay rate of 59 Fe at typical carbon shell burning temperature by taking the experimental Gamow-Teller transition strengths of the 59 Fe excited states. The result is also compared with those derived from large-scale shell model calculation. The new rate is up to a factor of 2.5 lower than theoretical rate of Fuller-Fowler-Newman (FFN) and up to a factor of 5 higher than decay rate of Langanke and Martínez-Pinedo (LMP) in temperature region of 0.5≤T [GK]≤2. We estimated the impact of the newly determined rate on the synthesis of cosmic γ emitter 60 Fe in the C-shell burning and explosive C/Ne burning using one-zone model calculation. Our results show that 59 Fe stellar β−decay plays an important role in the 60 Fe nucleosynthesis, even though the uncertainty of the decay rate is rather large due to the error of B(GT) strengths.

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“…Although the fusion-evaporation measurement [13] assigned this state as 5/2 − , the analysis of gamma transition alone could not exclude the assignment of 3/2 − . With the analysis of angular distribution of differential cross section in the experiment 58 Fe(d,p) and 57 Fe(t,p) [12], the J π of the state 0.571 MeV is identified as 3/2 − . Thus the β-decay of this state should not be important because it cannot undergo allowed transition to 59 Co ground state.…”

Section: Calculation Of the β Decay Rate For 59 Fe In Stellar Environmentioning

confidence: 99%

Theβ-decay rates of⁵⁹Fe isotopes in shell burning environments and their influences on the production of⁶⁰Fe in massive star

Lam

et al. 2016

EPJ Web of Conferences

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Abstract. The experimental B(GT) strengths of the 59 Fe excited states were employed to determine the transition strengths which greatly contribute 59 Fe stellar β−decay at typical carbon shell burning temperature. The result has been compared with the theoretical rates FFN (Fuller-Fowler-Newman) and LMP (Langanke&Martinez-Pinedo). Impact of the newly determined rate on the synthesis of cosmic γ emitter 60 Fe has also been studied using one-zone model calculation. Our results show 59 Fe stellar β−decay rate plays an important role in the 60 Fe nucleosynthesis. However the uncertainty of the decay rate is rather large due to the error of B(GT) strength that requires further studies.

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The 57Fe(t, p) 59Fe and 58Fe(d, p)59Fe reactions

Cited by 32 publications

References 19 publications

Investigation of the 56Fe(n, γ)57Fe and 58Fe(n, γ)59Fe reactions

Investigation of the 56Fe(n, γ)57Fe and 58Fe(n, γ)59Fe reactions

β -decay rate of Fe59 in shell burning environment and its influence on the production of Fe60
Li
¹
,
Lam
²
,
Qi
³

et al. 2016
Phys. Rev. C
8
0
7
0
View full text Add to dashboard Cite

Theβ-decay rates of⁵⁹Fe isotopes in shell burning environments and their influences on the production of⁶⁰Fe in massive star

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The 57Fe(t, p) 59Fe and 58Fe(d, p)59Fe reactions

Cited by 32 publications

References 19 publications

Investigation of the 56Fe(n, γ)57Fe and 58Fe(n, γ)59Fe reactions

Investigation of the 56Fe(n, γ)57Fe and 58Fe(n, γ)59Fe reactions

β -decay rate of Fe59 in shell burning environment and its influence on the production of Fe60Li1, Lam2, Qi3 et al. 2016Phys. Rev. C8070View full textAdd to dashboardCite

Theβ-decay rates of59Fe isotopes in shell burning environments and their influences on the production of60Fe in massive star

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β -decay rate of Fe59 in shell burning environment and its influence on the production of Fe60
Li
¹
,
Lam
²
,
Qi
³

et al. 2016
Phys. Rev. C
8
0
7
0
View full text Add to dashboard Cite

Theβ-decay rates of⁵⁹Fe isotopes in shell burning environments and their influences on the production of⁶⁰Fe in massive star