Nuclear-structure experiments at iThemba LABS to investigate discrepancies between (p,p′) and (γ,xn) data

L. M. Donaldson; P. Adsley; A. Banu; S. Bassauer; B. Bastin; C. A. Bertulani; J. W. Brümmer; J. Carter; G. R.J. Cooper; R. W. Fearick; S. V. Förtsch; H. Fujita; Y. Fujita; F. Hammache; M. N. Harakeh; J. Henderson; M. Jingo; H. Jivan; B. V. Kheswa; N. Y. Kheswa; W. Kleinig; C. O. Kureba; J. Kvasil; M. Latif; K. C.W. Li; A. Meyer; J. P. Mira; F. Nemulodi; V. O. Nesterenko; P. von Neumann-Cosel; R. Neveling; P. Papka; L. Pellegri; N. Pietralla; A. Richter; V. Yu Ponomarev; B. Rebeiro; P. G. Reinhard; N. de Séréville; E. Sideras-Haddad; F. D. Smit; M. K. Smith; J. A. Swartz; A. Tamii; I. T. Usman

doi:10.1088/1742-6596/2586/1/012068

Nuclear-structure experiments at iThemba LABS to investigate discrepancies between (p,p^′) and (γ,xn) data

L. M. Donaldson, P. Adsley, A. Banu, S. Bassauer, B. Bastin, C. A. Bertulani, J. W. Brümmer, J. Carter, G. R.J. Cooper, R. W. Fearick, S. V. Förtsch, H. Fujita, Y. Fujita, F. Hammache, M. N. Harakeh, J. Henderson, M. Jingo, H. Jivan, B. V. Kheswa, N. Y. KheswaW. Kleinig, C. O. Kureba, J. Kvasil, M. Latif, K. C.W. Li, A. Meyer, J. P. Mira, F. Nemulodi, V. O. Nesterenko, P. von Neumann-Cosel, R. Neveling, P. Papka, L. Pellegri, N. Pietralla, A. Richter, V. Yu Ponomarev, B. Rebeiro, P. G. Reinhard, N. de Séréville, E. Sideras-Haddad, F. D. Smit, M. K. Smith, J. A. Swartz, A. Tamii, I. T. Usman

Physics

Research output: Contribution to journal › Conference article › peer-review

Abstract

The iThemba Laboratory for Accelerator Based Sciences (iThemba LABS) is a centre of expertise and innovation in the field of nuclear-structure physics and is a leader in several high-impact studies. One of the highlights of these nuclear-structure experiments is the study of the broad structure of the IsoVector Giant Dipole Resonance (IVGDR) in the rare-earth region. Proton inelastic scattering experiments with E_p = 200 MeV were performed on the even-even Nd isotope chain and ¹⁵²Sm at very forward scattering angles including zero degrees with the K600 magnetic spectrometer. The evolution of the shape of the IVGDR in the transition from spherical to deformed nuclei was investigated. One of the goals of this highlighted study was to confirm the K-splitting observed in previous photo-absorption measurements from Saclay. Significant discrepancies were found between the direct (γ, xn) data obtained at Saclay and the equivalent photo-absorption cross sections obtained using (p, p^′) data from the K600. Furthermore, discrepancies exist for several nuclei between photo-absorption data taken at the Saclay and Livermore laboratories. These discrepancies, possible reasons for them and future investigations will be presented and discussed.

Original language	English
Article number	012068
Journal	Journal of Physics: Conference Series
Volume	2586
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/2586/1/012068
Publication status	Published - 2023
Event	28th International Nuclear Physics Conference, INPC 2022 - Cape Town, South Africa Duration: 11 Sept 2022 → 16 Sept 2022

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.1088/1742-6596/2586/1/012068

Cite this

Donaldson, L. M., Adsley, P., Banu, A., Bassauer, S., Bastin, B., Bertulani, C. A., Brümmer, J. W., Carter, J., Cooper, G. R. J., Fearick, R. W., Förtsch, S. V., Fujita, H., Fujita, Y., Hammache, F., Harakeh, M. N., Henderson, J., Jingo, M., Jivan, H., Kheswa, B. V., ... Usman, I. T. (2023). Nuclear-structure experiments at iThemba LABS to investigate discrepancies between (p,p^′) and (γ,xn) data. Journal of Physics: Conference Series, 2586(1), Article 012068. https://doi.org/10.1088/1742-6596/2586/1/012068

@article{8aa9ee771b7c4332a30434c9c30e3f8f,

title = "Nuclear-structure experiments at iThemba LABS to investigate discrepancies between (p,p′) and (γ,xn) data",

abstract = "The iThemba Laboratory for Accelerator Based Sciences (iThemba LABS) is a centre of expertise and innovation in the field of nuclear-structure physics and is a leader in several high-impact studies. One of the highlights of these nuclear-structure experiments is the study of the broad structure of the IsoVector Giant Dipole Resonance (IVGDR) in the rare-earth region. Proton inelastic scattering experiments with Ep = 200 MeV were performed on the even-even Nd isotope chain and 152Sm at very forward scattering angles including zero degrees with the K600 magnetic spectrometer. The evolution of the shape of the IVGDR in the transition from spherical to deformed nuclei was investigated. One of the goals of this highlighted study was to confirm the K-splitting observed in previous photo-absorption measurements from Saclay. Significant discrepancies were found between the direct (γ, xn) data obtained at Saclay and the equivalent photo-absorption cross sections obtained using (p, p′) data from the K600. Furthermore, discrepancies exist for several nuclei between photo-absorption data taken at the Saclay and Livermore laboratories. These discrepancies, possible reasons for them and future investigations will be presented and discussed.",

author = "Donaldson, {L. M.} and P. Adsley and A. Banu and S. Bassauer and B. Bastin and Bertulani, {C. A.} and Br{\"u}mmer, {J. W.} and J. Carter and Cooper, {G. R.J.} and Fearick, {R. W.} and F{\"o}rtsch, {S. V.} and H. Fujita and Y. Fujita and F. Hammache and Harakeh, {M. N.} and J. Henderson and M. Jingo and H. Jivan and Kheswa, {B. V.} and Kheswa, {N. Y.} and W. Kleinig and Kureba, {C. O.} and J. Kvasil and M. Latif and Li, {K. C.W.} and A. Meyer and Mira, {J. P.} and F. Nemulodi and Nesterenko, {V. O.} and {von Neumann-Cosel}, P. and R. Neveling and P. Papka and L. Pellegri and N. Pietralla and A. Richter and Ponomarev, {V. Yu} and B. Rebeiro and Reinhard, {P. G.} and {de S{\'e}r{\'e}ville}, N. and E. Sideras-Haddad and Smit, {F. D.} and Smith, {M. K.} and Swartz, {J. A.} and A. Tamii and Usman, {I. T.}",

note = "Publisher Copyright: {\textcopyright} 2023 Institute of Physics Publishing. All rights reserved.; 28th International Nuclear Physics Conference, INPC 2022 ; Conference date: 11-09-2022 Through 16-09-2022",

year = "2023",

doi = "10.1088/1742-6596/2586/1/012068",

language = "English",

volume = "2586",

journal = "Journal of Physics: Conference Series",

issn = "1742-6588",

publisher = "IOP Publishing Ltd.",

number = "1",

}

Donaldson, LM, Adsley, P, Banu, A, Bassauer, S, Bastin, B, Bertulani, CA, Brümmer, JW, Carter, J, Cooper, GRJ, Fearick, RW, Förtsch, SV, Fujita, H, Fujita, Y, Hammache, F, Harakeh, MN, Henderson, J, Jingo, M, Jivan, H, Kheswa, BV, Kheswa, NY, Kleinig, W, Kureba, CO, Kvasil, J, Latif, M, Li, KCW, Meyer, A, Mira, JP, Nemulodi, F, Nesterenko, VO, von Neumann-Cosel, P, Neveling, R, Papka, P, Pellegri, L, Pietralla, N, Richter, A, Ponomarev, VY, Rebeiro, B, Reinhard, PG, de Séréville, N, Sideras-Haddad, E, Smit, FD, Smith, MK, Swartz, JA, Tamii, A & Usman, IT 2023, 'Nuclear-structure experiments at iThemba LABS to investigate discrepancies between (p,p^′) and (γ,xn) data', Journal of Physics: Conference Series, vol. 2586, no. 1, 012068. https://doi.org/10.1088/1742-6596/2586/1/012068

TY - JOUR

T1 - Nuclear-structure experiments at iThemba LABS to investigate discrepancies between (p,p′) and (γ,xn) data

AU - Donaldson, L. M.

AU - Adsley, P.

AU - Banu, A.

AU - Bassauer, S.

AU - Bastin, B.

AU - Bertulani, C. A.

AU - Brümmer, J. W.

AU - Carter, J.

AU - Cooper, G. R.J.

AU - Fearick, R. W.

AU - Förtsch, S. V.

AU - Fujita, H.

AU - Fujita, Y.

AU - Hammache, F.

AU - Harakeh, M. N.

AU - Henderson, J.

AU - Jingo, M.

AU - Jivan, H.

AU - Kheswa, B. V.

AU - Kheswa, N. Y.

AU - Kleinig, W.

AU - Kureba, C. O.

AU - Kvasil, J.

AU - Latif, M.

AU - Li, K. C.W.

AU - Meyer, A.

AU - Mira, J. P.

AU - Nemulodi, F.

AU - Nesterenko, V. O.

AU - von Neumann-Cosel, P.

AU - Neveling, R.

AU - Papka, P.

AU - Pellegri, L.

AU - Pietralla, N.

AU - Richter, A.

AU - Ponomarev, V. Yu

AU - Rebeiro, B.

AU - Reinhard, P. G.

AU - de Séréville, N.

AU - Sideras-Haddad, E.

AU - Smit, F. D.

AU - Smith, M. K.

AU - Swartz, J. A.

AU - Tamii, A.

AU - Usman, I. T.

PY - 2023

Y1 - 2023

N2 - The iThemba Laboratory for Accelerator Based Sciences (iThemba LABS) is a centre of expertise and innovation in the field of nuclear-structure physics and is a leader in several high-impact studies. One of the highlights of these nuclear-structure experiments is the study of the broad structure of the IsoVector Giant Dipole Resonance (IVGDR) in the rare-earth region. Proton inelastic scattering experiments with Ep = 200 MeV were performed on the even-even Nd isotope chain and 152Sm at very forward scattering angles including zero degrees with the K600 magnetic spectrometer. The evolution of the shape of the IVGDR in the transition from spherical to deformed nuclei was investigated. One of the goals of this highlighted study was to confirm the K-splitting observed in previous photo-absorption measurements from Saclay. Significant discrepancies were found between the direct (γ, xn) data obtained at Saclay and the equivalent photo-absorption cross sections obtained using (p, p′) data from the K600. Furthermore, discrepancies exist for several nuclei between photo-absorption data taken at the Saclay and Livermore laboratories. These discrepancies, possible reasons for them and future investigations will be presented and discussed.

AB - The iThemba Laboratory for Accelerator Based Sciences (iThemba LABS) is a centre of expertise and innovation in the field of nuclear-structure physics and is a leader in several high-impact studies. One of the highlights of these nuclear-structure experiments is the study of the broad structure of the IsoVector Giant Dipole Resonance (IVGDR) in the rare-earth region. Proton inelastic scattering experiments with Ep = 200 MeV were performed on the even-even Nd isotope chain and 152Sm at very forward scattering angles including zero degrees with the K600 magnetic spectrometer. The evolution of the shape of the IVGDR in the transition from spherical to deformed nuclei was investigated. One of the goals of this highlighted study was to confirm the K-splitting observed in previous photo-absorption measurements from Saclay. Significant discrepancies were found between the direct (γ, xn) data obtained at Saclay and the equivalent photo-absorption cross sections obtained using (p, p′) data from the K600. Furthermore, discrepancies exist for several nuclei between photo-absorption data taken at the Saclay and Livermore laboratories. These discrepancies, possible reasons for them and future investigations will be presented and discussed.

UR - http://www.scopus.com/inward/record.url?scp=85174597294&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/2586/1/012068

DO - 10.1088/1742-6596/2586/1/012068

M3 - Conference article

AN - SCOPUS:85174597294

SN - 1742-6588

VL - 2586

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

IS - 1

M1 - 012068

T2 - 28th International Nuclear Physics Conference, INPC 2022

Y2 - 11 September 2022 through 16 September 2022

ER -

Nuclear-structure experiments at iThemba LABS to investigate discrepancies between (p,p^′) and (γ,xn) data

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this