Single proton transfer to<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">P</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>2</mml:mn><mml:mn>9</mml:mn><mml:mo>,</mml:mo><mml:mn>3</mml:mn><mml:mn>0</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>states

Dykoski, W.W.; Dehnhard, D.

doi:10.1103/physrevc.13.80

Cited by 33 publications

(34 citation statements)

References 27 publications

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“…The contributions of three threshold states were S pc (E R \ taken into account. Spectroscopic factors were adopted from Table 2 of Dykoski & Dehnhard (1976) or have been estimated from their Figure 2. The direct capture contribution has been calculated in the present work and dominates the reaction rates only below T \ 0.03 GK.…”

Section: B6 the 29si( P C)30p Reactionmentioning

confidence: 99%

Proton‐induced Thermonuclear Reaction Rates for A = 20–40 Nuclei

Iliadis

D’Auria

Starrfield

et al. 2001

ASTROPHYS J SUPPL S

286

419

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Proton-induced reaction rates on 26 stable and 29 unstable target nuclei in the mass A \ 20È40 region have been evaluated and compiled. Recommended reaction rates, assuming that all interacting nuclei are in the ground state, are presented in tabular form on a temperature grid in the range T \ 0.01È10.0 GK. Most reaction rates involving stable targets were normalized to a set of measured standard resonance strengths in the sd shell. For the majority of reaction rates, experimental information from transfer reaction studies has been used consistently. Our results are compared with recent statistical model (HauserFeshbach) calculations. Reaction rate uncertainties are presented and amount to several orders of magnitude for many of the reactions. Several of these reaction rates and/or their corresponding uncertainties deviate from results of previous compilations. In most cases, the deviations are explained by the fact that new experimental information became available recently. Examples are given for calculating reaction rates and reverse reaction rates for thermally excited nuclei from the present results. The survey of literature for this review was concluded in 2000 August.

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Section: B6 the 29si( P C)30p Reactionmentioning

confidence: 99%

Proton‐induced Thermonuclear Reaction Rates for A = 20–40 Nuclei

Iliadis

D’Auria

Starrfield

et al. 2001

ASTROPHYS J SUPPL S

286

419

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“…To reproduce these data, we studied one-proton transfers to five excited states of the final nucleus, the one listed above and four at higher excitation energies that subsequently γ -decay to the first excited state. For the calculations, the states with the highest spectroscopic amplitudes were chosen [43].…”

Section: B P Transfermentioning

confidence: 99%

“…The spectroscopic factors for 6 Li = 5 He+p were taken from the shell model prediction of Cohen and Kurath [41]. For the states in the final nucleus, the quantum numbers and spectroscopic factors were taken from proton stripping studies (τ, d) [42,43].…”

Section: B P Transfermentioning

confidence: 99%

Strong transfer channels in theLi6+Si28system at near-barrier energies

et al. 2007

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Exclusive α-particle and proton production measurements of the system 6 Li+ 28 Si are performed at near-barrier energies. Each reaction channel is tagged via a particle-γ coincidence requirement. Ratios of direct to compound contributions are estimated via particle angular distribution measurements. Strong reaction channels for n and p transfer are identified and quantified and found to be described well on a qualitative basis with distorted-wave Born approximation calculations.

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“…The cocktail beam then passed either a 2.5 µm Be stripper foil or a 220 µg/cm 2 C foil to boost the population of fully-stripped ions, was momentum selected at the dispersive focal plane for 30 S 16+ at 4.0 MeV/u (∆p/p = 1.875%), and finally purified with the Wien (velocity) filter (±72 kV) before arriving at the experimental focal plane. The main impurity was 29 P 15+ , which has a production cross section around ∼ 10 2 mb/sr [11], about two orders of magnitude higher than 30 S under these conditions (∼ 1 mb/sr) [12]. Further details on the RI beam production and required development were reported previously [13,14,15,16].…”

Section: Pos(nic Xii)201mentioning

confidence: 62%

Measurement of the 30 S+α system for type I X-ray bursts

Kahl

Chen

Kubono

et al. 2013

Proceedings of XII International Symposium on Nuclei in the Cosmos — PoS(NIC XII)

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The 30 S(α, p) reaction is considered to be important in the nuclear trajectory to higher mass in type I X-ray bursts. The reaction flow encounters a bottleneck at 30 S, owing to the competition of photo-disintegration with further proton capture, and because the half-life of this isotope is on the order of the burst rise timescale. Different burst simulations by various researchers indicate the (α, p) reaction may bypass this waiting point, depending on the stellar reaction rate, which has not previously been measured experimentally, and the structure of the compound nucleus 34 Ar is not well understood above the alpha-threshold. The 30 S(α, p) reaction could explain rare bolometrically double-peaked burst profiles, appears to make a considerable contribution to the overall energy generation, and affects the neutron star crustal composition for the recurrent inertia required in burst models to reproduce astronomical observations. Using a low-energy 30 S radioactive ion beam and an active target technique (a helium gas mixture serves as both a target gas and a detector fill gas), we acquired data on both alpha elastic scattering of 30 S as well as the 30 S(α, p) reaction simultaneously at relevant energies for X-ray bursts. We present for the first time the status of the data analysis and the preliminary results of this research.

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Single proton transfer toP29,30states

Cited by 33 publications

References 27 publications

Proton‐induced Thermonuclear Reaction Rates for A = 20–40 Nuclei

Proton‐induced Thermonuclear Reaction Rates for A = 20–40 Nuclei

Strong transfer channels in theLi6+Si28system at near-barrier energies

Measurement of the 30 S+α system for type I X-ray bursts

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