Investigation of the (d, 6Li) reaction on 16O at Ed = 80 MeV

Oelert, W.; Djaloeis, A.; Mayer‐Böricke, C.; Turek, P.; Wiktor, S.

doi:10.1016/0375-9474(78)90306-8

Cited by 21 publications

(4 citation statements)

References 23 publications

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“…Heavy-ion multinucleon transfer reactions have been extensively studied during recent years [1][2][3][4][5][6][7][8], revealing interesting phenomena connected to single-particle pairing correlations and cluster degrees of freedom. Moreover, these studies are also complementary to those on double charge exchange (DCE) reactions, which have recently attracted interest for their possible connection to neutrinoless double-β decay [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Analysis of two-nucleon transfer reactions in the Ne20+Cd116 system at 306 MeV

Carbone¹,

Ferreira²,

Calabrese³

et al. 2020

Phys. Rev. C

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Background: Heavy-ion induced two-nucleon transfer reactions are powerful tools to reveal peculiar aspects of the atomic nucleus, such as pairing correlations, single-particle and collective degrees of freedom, and more. Also, these processes are in competition with the direct meson exchange in the double charge exchange reactions, which have recently attracted great interest due to their possible connection to neutrinoless double-β decay. In this framework, the exploration of two-nucleon transfer reactions in the 20 Ne + 116 Cd collision at energies above the Coulomb barrier is particularly relevant since the 116 Cd nucleus is a candidate for the double-β decay.Purpose: We want to analyze selected transitions to low-lying 0 + and 2 + states of the residual nuclei in the 116 Cd( 20 Ne, 22 Ne) 114 Cd two-neutron pickup and 116 Cd( 20 Ne, 18 O) 118 Sn two-proton stripping reactions at 306 MeV incident energy and determine the role of the couplings with inelastic transitions. Methods: We measured the excitation energy spectra and absolute cross sections for the two reactions using the MAGNEX large acceptance magnetic spectrometer to detect the ejectiles. We performed direct coupled reaction channels and sequential distorted wave Born approximation calculations using the double folding São Paulo potential to model the initial and final state interactions. The spectroscopic amplitudes for two-and singleparticle transitions were derived by different nuclear structure approaches: microscopic large-scale shell model, interacting boson model-2 and quasiparticle random phase approximation. Results:The calculations are able to reproduce the experimental cross sections for both two-neutron and twoproton transfer reactions. The role of couplings with the inelastic channels are found to be important in the two-proton transfer case. A competition between the direct and the sequential process is found in the reaction *

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Section: Introductionmentioning

confidence: 99%

Analysis of two-nucleon transfer reactions in the Ne20+Cd116 system at 306 MeV

Carbone¹,

Ferreira²,

Calabrese³

et al. 2020

Phys. Rev. C

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“…In order to verify the presence of α-cluster states, α-transfer reactions are useful, as they can produce nuclei in their ground states as well as in excited ones, within a consistent reaction condition. Experimental studies of ( 6 Li, d) reactions on 12 C and its inverse have been carried out since 1960s [26,[30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49]. In most of these studies, spectroscopic factors (SFs) have been extracted to identify cluster states of 16 O, with an astrophysical interest as well.…”

Section: Introductionmentioning

confidence: 99%

Investigation of spatial manifestation of α clusters in 16O via α-transfer reactions

et al. 2019

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Recently, we have determined surface distributions of α clusters in the ground state of 20 Ne from α-transfer cross sections, without investigating the properties of its excited states. In this paper we extend our comprehension of αcluster structures in excited states of nuclei through reaction studies. In particular we focus on 16 O, for which attention has been paid to advances of structure theory and assignment regarding 4 + -resonance states. We study the surface manifestation of the α-cluster states in both the ground and excited states of 16 O from the analysis of the α-transfer reaction 12 C( 6 Li, d) 16 O. The α-transfer reaction is described by the distorted-wave Born approximation. We test two microscopic wave functions as an input of reaction calculations. Then a phenomenological potential model is introduced to clarify the correspondence between cluster-wave functions and transfer-cross sections. Surface peaks of the α-wave function of 16 O(0 + ) are sensitively probed by transfer-cross sections at forward angles, while it remains unclear how we trace the surface behavior of 16 O(4 + ) from the cross sections. From inspection of the cross sections at forward angles, we are able to specify that the α-cluster structure in the 0 + 1 and 0 + 2 states prominently manifests itself at the radii ∼ 4 and ∼ 4.5 fm, respectively. It is remarkable that the 4 + 1 state has the 12 C + α-cluster component with the surface peak at the radius ∼ 4 or outer, whereas the 12 C + α-cluster component in the 4 + 2 state is found not to be dominant. The 4 + 2 state is difficult to be interpreted by a simple potential model assuming the 12 C + α configuration only.

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“…For a long time, heavy-ion multi-nucleon transfer re- * ciraldo@lns.infn.it actions have been extensively studied [10][11][12][13][14][15][16], revealing interesting phenomena connected to single-particle, pairing correlations and cluster degrees of freedom. Among these, heavy-ion direct transfer reactions at energies above the Coulomb barrier are useful tools for obtaining precise spectroscopic information.…”

Section: Introductionmentioning

confidence: 99%

“…Over the past few years, a systematic study on heavy-ion-induced one-and two-neutron transfer reactions on different target nuclei was pursued at the Istituto Nazionale di Fisica Nucleare-Laboratori Nazionali del Sud (INFN-LNS) (Italy) by the ( 18 O, 17 O) and ( 18 O, 16 O) reactions at incident energies ranging from 84 to 275 MeV [17][18][19][20][21][24][25][26][27]. Many nuclear systems were explored using 9 Be, 11 B, 12 C, 13 C, 16 O, 28 Si, and 64 Ni targets and the MAGNEX magnetic spectrometer [28,29] to detect the ejectiles. Thanks to the spectrometer high resolution and large acceptance, high quality inclusive spectra were obtained.…”

Section: Introductionmentioning

confidence: 99%

Analysis of one-neutron transfer reaction in $^{18}$O + $^{76}$Se collision at 275 MeV

Ciraldo,

Cappuzzello,

Cavallaro

et al. 2022

Preprint

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Background: Heavy-ion one-nucleon transfer reactions are promising tools to investigate single-particle configurations in nuclear states, with and without the excitation of the core degrees of freedom. A careful determination of the spectroscopic amplitudes of these configurations is essential for the accurate study of other direct reactions as well as beta-decays. In nucleon transfer reactions core excitations, for both target and projectile systems, are best approached via coupled channel reaction schemes. Despite being notoriously demanding in terms of computing resources, coupled channel analyses are progressively becoming more affordable even within model spaces large enough for tackling medium mass nuclei. In this context, the 76 Se( 18 O, 17 O) 77 Se reaction, here under study, gives a quantitative access to the relevant single particle orbitals and core polarization configurations built on 76 Se. This is particularly relevant, since it provides data-driven information to constrain nuclear structure models for 76 Se, which is the daughter nucleus in the 76 Ge double beta decay. This reaction is one of the systems studied in the frame of the NUMEN project.Purpose: We want to analyze transitions to low-lying excited states of the residual and ejectile nuclei in the 76 Se( 18 O, 17 O) 77 Se one-neutron stripping reaction at 275 MeV incident energy and determine the role of singleparticle and core-excitation in the description of the measured cross sections. In addition, we explore the sensitivity of the calculated cross section to different nuclear structure models. Methods:The excitation energy spectrum and the differential cross section angular distributions are measured using the MAGNEX large acceptance magnetic spectrometer for the detection of the ejectiles and the missing mass technique for the reconstruction of the reaction kinematics. The data are compared with calculations based on distorted wave Born approximation, coupled channel Born approximation and coupled reaction channels adopting spectroscopic amplitudes for the projectile and target overlaps derived by large-scale shell model calculations and interacting boson-fermion model.Results: Peaks in the energy spectra corresponding to groups of unresolved transitions to 77 Se and 17 O are identified. The experimental cross sections are extracted and compared to theoretical calculations. A remarkable agreement is found, without using any scaling factors, demonstrating that the adopted models for nuclear structure and reaction take into account the relevant aspects of the studied processes. The main transitions which contribute to the cross section of each peak are identified. Conclusions: The coupling with the inelastic channels feeding states in entrance and exit partitions is important in the one-neutron transfer reaction and should be accounted for in future analyses of other direct reactions such as single and double charge exchange processes involving 76 Se isotope. The description of 77 Se indicates the need of a large model space, in the view...

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Investigation of the (d, 6Li) reaction on 16O at Ed = 80 MeV

Cited by 21 publications

References 23 publications

Analysis of two-nucleon transfer reactions in the Ne20+Cd116 system at 306 MeV

Analysis of two-nucleon transfer reactions in the Ne20+Cd116 system at 306 MeV

Investigation of spatial manifestation of α clusters in 16O via α-transfer reactions

Analysis of one-neutron transfer reaction in $^{18}$O + $^{76}$Se collision at 275 MeV

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