Colloque GANIL 2023

Session

Nuclei at the drip lines

25 sept. 2023, 11:15

Présidents de session

Nuclei at the drip lines

• Beatriz Fernandez Dominguez (USC)

Nuclei at the drip lines

• Stephane Grevy (CENBG)

81. On the long-standing quest for the tetra-neutron system: a recent observation of four-neutron correlations and future perspectives

Dr PASCHALIS, Stefanos (University of York)

25/09/2023 11:15

Nuclear Structure

Invited presentation

The search for chargeless nuclei consisting only of neutrons has been a long-lasting challenge in nuclear physics, dating more than six decades back (see Ref. [1] for a recent review). The tetraneutron, in particular, has attracted a lot of experimental and theoretical attention. Most models agree that nuclear forces cannot bind four neutrons together without destroying many of the other...

24. Missing mass spectroscopy of light proton unbound nuclei

KOYAMA, Shumpei (GANIL)

25/09/2023 11:40

Nuclear Structure

Invited presentation

Light proton-unbound nuclei, ${}^8$C, ${}^7$B, ${}^6$Be and ${}^5$Li, were investigated by the missing mass method. By using this method, we can measure resonances independently of their decay channels. This is efficient especially for the four-proton unbound nucleus ${}^8$C. Decay channels can be also investigated by the coincidence detection.
We performed the experiment with an N=3 isotone secondary...

26. Study of the tensor force contribution in the N isotopic chain using QFS reactions

M. BARRIÈRE, Antoine (Grand Accélérateur National d'Ions Lourds (GANIL))

25/09/2023 12:05

Nuclear Structure

Oral Presentation

In the shell model framework, the two-body nuclear force can be divided into a central, spin-orbit (SO) and tensor parts. The vast majority of studies performed so far in the chart of nuclides shows that the amplitude of the SO splitting scales with the function presented by G.Mairle [1], from systematics of nuclei studied so far in the valley of stability. Two exceptions to this trend have...

23. (d, 3He) transfer reactions with Be-Li isotopes near the drip-line

LOZANO GONZÁLEZ, Miguel (IGFAE-USC)

25/09/2023 12:25

Nuclear Structure

Oral Presentation

Proton-removal reactions along the Be-Li chain close to the drip-line have been investigated with the aim of establishing the role of the Geometrical Mismatch Factor (GMF) and NN effects [1] in lowering the cross sections, as observed previously in He-Li nuclei [2].

The experiment was performed at GANIL using 10Be and 12Be beams at 30 AMeV impinging a CD2 target, with an intensity of 3 ·...

31. Proton hole states in ${}^{19}$N from the d(${}^{20}$O, ${}^3$He): Study of the Z=6 shell gap

LOIS-FUENTES, Juan (IGFAE/USC)

27/09/2023 10:55

Nuclear Structure

Invited presentation

The Z=6 shell gap in neutron-rich carbon isotopes has been a subject of debate, with recent studies claiming its prevalence in this region of the nuclear chart [1], in contradiction with recent measurements [2] and shell model predictions [3].
In order to shed more light into this subject, the structure of ${}^{19}$N was investigated through the proton-removal d(${}^{20}$O, ${}^3$He) reaction...

17. Coulomb barrier scattering of the proton halo nucleus 17Ne

MARTEL, Ismael (University of Huelva)

27/09/2023 11:20

Nuclear Dynamics

Oral Presentation

Coulomb barrier scattering of the proton halo nucleus 17Ne

I. Martel(a), J. Díaz-Ovejas(b), D. Dell’Aquila(c,d),L. Acosta(e), J. L. Aguado(a), G. de Angelis(f), M. J. G. Borge(b), J. A. Briz(b), A. Chbihi(g), G. Colucci(h), C. Díaz-Martín(a), P. Figuera(d), D. Galaviz(i), C. García-Ramos(a), J. A. Gómez-Galán(a), C. A. Gonzales(a), N. Goyal(g), N. Keeley(j), K. W. Kemper(k), T....

57. Overview of the MUGAST silicon array at GANIL

GIRARD-ALCINDOR, Valérian (IJCLAB)

27/09/2023 11:40

Instrumentation and Technical developments

Oral Presentation

MUGAST [1] is a state-of-the-art silicon array combining trapezoidal and square shaped double-sided silicon strip detectors (DSSD) to four MUST2 [2] telescopes. Coupled to a gamma-ray spectrometer, the excellent angular coverage and compacity of the MUGAST array make it an ideal tool for the study of transfer reactions. It is a first step toward the development of the new generation of silicon...