Beta decay properties of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Se</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>6</mml:mn><mml:mn>7</mml:mn><mml:mo>,</mml:mo><mml:mn>6</mml:mn><mml:mn>8</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>and the astrophysical<i>rp</i>-process path

Baumann, P.; Bounajma, M.; Huck, Alexander; Klotz, G.; Knipper, A.; Walter, G.; Marguier, G.; Richard‐Serre, C.; Ravn, H. L.; Hagebø, E.; Hoff, P.; Steffensen, Knut R.

doi:10.1103/physrevc.50.1180

Cited by 28 publications

(9 citation statements)

References 26 publications

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“…We use D = 6146 s and g A = 1.26. The experimental value of the half-life for the decay of the ground state of 68 Se is 35.5(7) s [8], while the Excited Vampir result is 48.8 (33.5) s using Bonn A (Bonn CD) [6]. The half-life of the first excited 0 + state calculated using the theoretical excitation energy is 60.7 s using Bonn A and 62.8 s using Bonn CD.…”

Section: Structure and Beta Decay Of 68 Sementioning

confidence: 91%

Beyond mean field approach to the beta decay of medium mass nuclei relevant for nuclear astrophysics

Petrovici

Schmid

Faessler

2011

Progress in Particle and Nuclear Physics

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Section: Structure and Beta Decay Of 68 Sementioning

confidence: 91%

Beyond mean field approach to the beta decay of medium mass nuclei relevant for nuclear astrophysics

Petrovici

Schmid

Faessler

2011

Progress in Particle and Nuclear Physics

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“…A SeCO + beam from a ZrO 2 target was used for chemically pure separation of selenium [23] and enabled the first measurement of the decay properties of the exotic isotopes 67,68 Se [68]. The homologue COS + beams were not yet observed at ISOLDE, but in principle the separation as carbonyl ion could open the way to clean sulfur beams.…”

Section: Separation Of Molecular Sidebandsmentioning

confidence: 99%

ISOLDE target and ion source chemistry

Köster¹

2001

Radiochimica Acta

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For the production of radioactive ion beams by means of the ISOL (isotope separation on-line) method in which the nuclei of interest are stopped in a thick target, chemistry plays a crucial role. It serves to separate the nuclear reaction products in atomic or molecular form from the bulk target and to transfer them efficiently to an ion source. This article gives an overview of ISOLDE radiochemical methods where targets (liquid metals, solid metals, carbides and oxides) and ion sources are optimized with respect to efficiency, speed and chemical selectivity. Rather pure beams of non-metals and volatile metals can be obtained with a temperature-controlled transfer line acting as thermo-chromatograph. For less volatile metals the temperature of the target and ion source units needs to be kept as high as possible, but a selective ion source can be used: positive surface ionization for metals with ionization potentials below about 6 eV and the RILIS (resonance ionization laser ion source) technique for most other metals.

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“…[1]), and the assumption that the photodisintegration of 70 Kr is negligible [1]. Under this assumption, the effective halflife of 68 Se is determined from its decay (35:5 s [27]) and the 2p-capture rate [see Eq. (44) in Ref.…”

mentioning

confidence: 99%

Precise Mass Measurement ofSe68, a Waiting-Point Nuclide along therpProcess

et al. 2004

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Mass measurements of 68Ge, 68As, and 68Se have been obtained with the Canadian Penning Trap mass spectrometer. The results determine the mass excess of 68Se as -54 232(19) keV, the first measurement with a precision and reliability sufficient to address the light-curve and energy output of x-ray bursts as well as the abundances of the elements synthesized. Under typical conditions used for modeling x-ray bursts, 68Se is found to cause a significant delay in the rp process nucleosynthesis.

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Beta decay properties ofSe67,68and the astrophysicalrp-process path

Cited by 28 publications

References 26 publications

Beyond mean field approach to the beta decay of medium mass nuclei relevant for nuclear astrophysics

Beyond mean field approach to the beta decay of medium mass nuclei relevant for nuclear astrophysics

ISOLDE target and ion source chemistry

Precise Mass Measurement ofSe68, a Waiting-Point Nuclide along therpProcess

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