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相关论文: Reconciling Coulomb breakup and neutron radiative …

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We use the Coulomb dissociation (CD) method to calculate the rate of the $^{36}$Mg(${n,\gamma}$)$^{37}$Mg radiative capture reaction. The CD cross sections of the $^{37}$Mg nucleus on a $^{208}$Pb target at the beam energy of 244…

核理论 · 物理学 2017-08-31 Sharma Shubhchintak , R. Chatterjee , R. Shyam

A kinematically complete measurement was made of the Coulomb dissociation of 8B nuclei on a Pb target at 83 MeV/nucleon. The cross section was measured at low relative energies in order to infer the astrophysical S factor for the…

We show how to derive nuclear structure information on loosely bound nuclei far from the beta stability line from their Coulomb dissociation into the continuum. The 19C -> 18C + n process is taken as an example and it is shown that basic…

核理论 · 物理学 2007-05-23 A. Mengoni

Within the potential cluster model with the forbidden states and an orbital states classification according to the Young diagrams the possibility of description of experimental data for the total cross-sections of radiative n15N-capture at…

核理论 · 物理学 2015-06-15 S. B. Dubovichenko , N. V. Afanasyeva

The $({\rm n},\gamma)$--cross sections for neutron--rich oxygen isotopes have been calculated in the direct capture model. The experimental data for ${^{18}{\rm O}}({\rm n},\gamma){^{19}{\rm O}}$ can be reproduced using this model. Compared…

核理论 · 物理学 2015-06-26 Karl Grün , Rudolf Pichler , Heinz Oberhummer

Differential cross sections for deuteron breakup $^{1}H(d, pp)n$ reaction were measured for a large set of 243 geometrical configurations at the beam energy of 80 MeV/nucleon. The cross section data are normalized by the luminosity factor…

Within the pure Coulomb breakup mechanism, we investigate the one-neutron removal reaction of the type A(a,b$\gamma$)X with $^{11}$Be and $^{19}$C projectiles on a heavy target nucleus $^{208}$Pb at the beam energy of 60 MeV/nucleon. Our…

核理论 · 物理学 2009-11-07 R. Shyam , P. Danielewicz

The possibility of the description of the available experimental data for cross sections of the neutron capture reaction on 10B at thermal and astrophysical energies, taking into account the resonance at 475 keV, was considered within the…

核理论 · 物理学 2013-12-18 Sergey Dubovichenko , Albert Dzhazairov-Kakhramanov

The cross sections for the ($^8$B,$^7$Be-$p$) breakup reaction on $^{58}$Ni and $^{208}$Pb targets at the beam energies of 25.8 MeV and 415 MeV have been calculated within a one-step prior-form distorted-wave Born approximation. The…

核理论 · 物理学 2009-10-31 R. Shyam , I. J. Thompson

The dependence of breakup cross sections of 8B at 65 MeV/nucleon on the target mass number A_T is investigated by means of the continuum-discretized coupled-channels method (CDCC) with more reliable distorting potentials than those in the…

核理论 · 物理学 2015-05-13 K. Ogata , T. Matsumoto , Y. Iseri , M. Yahiro

Measurement of the fusion cross-section for neutron-rich light nuclei is crucial in ascertaining if fusion of these nuclei occurs in the outer crust of a neutron star. We have therefore measured the fusion excitation function at…

We discuss the use of one-nucleon breakup reactions of loosely bound nuclei at intermediate energies as an indirect method in nuclear astrophysics. These are peripheral processes, therefore we can extract asymptotic normalization…

核实验 · 物理学 2015-06-26 L. Trache , F. Carstoiu , C. A. Gagliardi , R. E. Tribble

We formulate a microscopic theory to calculate cross section of the radiative neutron capture on neutron-rich nuclei using the continuum quasiparticle random-phase approximation. This formulation is designed to be applied to neutron-rich…

核理论 · 物理学 2025-04-28 Teruyuki Saito , Masayuki Matsuo

The cross section of the $^{9}$Be(n,$\gamma$)$^{10}$Be reaction was calculated in the direct capture model. All parameters of the calculations were adjusted to properties of the $^{9}$Be + n system at thermal energies. The calculated cross…

核理论 · 物理学 2019-05-29 Peter Mohr

In an effort to better determine the 7Be(p,gamma)8B reaction rate, we have performed inclusive and exclusive measurements of the Coulomb dissociation of 8B. The former was a study of longitudinal momentum distributions of 7Be fragments…

Total radiative thermal neutron-capture $\gamma$-ray cross sections for the $^{182,183,184,186}$W isotopes were measured using guided neutron beams from the Budapest Research Reactor to induce prompt and delayed $\gamma$ rays from elemental…

The total cross section for radiative neutron capture on a proton, $np \to d \gamma$, is evaluated at big bang nucleosynthesis (BBN) energies. The electromagnetic transition amplitudes are calculated up to next-to leading order within the…

核理论 · 物理学 2009-11-11 S. Ando , R. H. Cyburt , S. W. Hong , C. H. Hyun

The astrophysical factor for 7Be(p,\gamma)8B at zero energy, S17(0), is determined from an analysis of 208Pb(8B, p+7Be)208Pb at 52 MeV/nucleon by means of the method of continuum-discretized coupled-channels (CDCC) taking account of all…

核理论 · 物理学 2007-05-23 K. Ogata , S. Hashimoto , Y. Iseri , M. Kamimura , M. Yahiro

Cadmium has been used historically as an important component of integral experiments because of its high thermal neutron absorption cross section. Correct interpretation of such experiments depends on accurate differential neutron cross…

核实验 · 物理学 2018-01-11 G. Leinweber , D. P. Barry , R. C. Block , J. A. Burke , K. E. Remley , M. J. Rapp , Y. Danon

The method for an experimental determination of the stellar enhancement factor for the cross section of the $^{151}$Sm$(n,\gamma)$ reaction process is proposed. This study offered the pretext for an excursus on the interconnections between…

核理论 · 物理学 2009-11-11 Alberto Mengoni