Irfu
Alexandre OBERTELLICEA Saclay - Service de Physique nucléaire  +33 (1) 69 08 75 55 +33 (1) 69 08 75 84 alexandre.obertelli cea.fr |
Fonction
Physicien
Sujets de recherche
- Spectroscopie des noyaux instables par réactions directes.
- Développement d'instrumentation associée.
Projets en cours
- MINOS (PI), ERC Starting Grant (2010-2015)
- CHyMENE (2011-2014).
CV
2011: Habilitation à Diriger des Recherches, Université Paris Sud.
2006-today: physicien au CEA - Saclay, Service de Physique Nucléaire (SPhN).
2005-2006: postdoctorat au National Superconducting Cyclotron Laboratory (NSCL), Michigan State University (MSU) dans le groupe de spectroscopie gamma. Réactions de "knockout" et excitation coulombienne de noyaux exotiques.
2002-2005: thèse au CEA - Saclay, Service de Physique Nucléaire (SPhN).
Publications scientifiques
2012:
Nonsudden limits of heavy-ion induced knockout reactions
F. Flavigny, A. Obertelli et al., Phys. Rev. Lett. 108, 252501 (2012).
AGATA-Advanced GAmma Tracking Array
S. Akkoyun et al., Nucl. Instr. Meth. Res. A 668, 26 (2012).
2011:
Hydrogen targets for exotic-nuclei studies developed over the past 10 years
A. Obertelli and T. Uesaka, Eur. Phys. Jour. A 47, 105 (2011).
Discharge studies in Micromegas detectors in low energy hadron beams
G. Charles et al., Nucl. Instr. Meth. Res. A 648, 174 (2011).
First spectroscopy of Se-66 and As-65: Investigating shape coexistence beyond the N=Z line
A. Obertelli et al., Phys. Lett. B 701, 417 (2011).
Lifetime measurements in Co-63 and Co-65
A. Dijon et al., Phys. Rev. C 83, 064321 (2011).
Knockout reactions from p-shell nuclei: tests of Ab Initio structure models
G.F. Grinyer et al., Phys. Rev. Lett. 106, 044306 (2011).
In-beam gamma spectroscopy of Mg-35 and Na-33
A. Gade et al., Phys. Rev. C 83, 044305 (2011).
2010:
Nucleon removal from unstable nuclei investigated via intranuclear cascade
C. Louchart, A. Obertelli, A. Boudard, F. Flavigny, Phys. Rev. C 83, 011601(R) (2010).
Lifetime measurements of excited states in neutron-rich Ar-44, Ar-46 populated via multinucleon transfer reaction
D. Mengoni et al., Phys. Rev. C 82, 024308 (2010).
Onset of collectivity in neutron-rich Fe isotopes: Toward a new island of inversion?
J. Ljungvall, A. Gorgen, A. Obertelli et al., Phys. Rev. C 81, 061301(R) (2010).
6He+9Be reactions at 16.8 MeV
M. Majer et al., Eur. Phys. J. A 43, 153-158 (2010).
2009:
Collective structure of the N=40 isotones
L. Gaudefroy, A. Obertelli, S. Peru, N. Pillet, S. Hilaire, J.-P. Delaroche, M. Girod, J. Libert, Phys. Rev. C 80, 064313 (2009).
Shape evolution in self-conjugate nuclei, and the transitional nucleus 68Se
A. Obertelli et al., Phys. Rev. C 80, 031304(R) (2009).
Shape of 44Ar: onset of deformation in neutron-rich nuclei near 48Ca
M. Zielinska et al., Phys. Rev. C 80, 014317 (2009).
Medium effects on intermediate-energy one-nucleon removal cross sections
F. Flavigny, A. Obertelli, I. Vidana, Phys. Rev. C 79, 064617 (2009).
Lifetime measurements of the neutron-rich N=30 isotones 50Ca and 51Sc: orbital dependence of effective charges in the fp shell
J.J. Valiente-Dobon et al., Phys. Rev. Lett. 102, 242502 (2009).
Mechanisms in knockout reactions
D. Bazin et al., Phys. Rev. Lett. 102, 232501 (2009).
Gamma-ray spectroscopy at the limits: first observation of rotationnal bands in 255Lr
S. Ketelhut et al., Phys. Rev. Lett. 102, 212501 (2009).
The role of triaxiality for the coexistence and evolution of shapes in light krypton isotopes
M. Girod, J.-P. Delaroche, A. Goregen, A. Obertelli, Phys. Lett. B 676, 39 (20009).
2008:
In-beam gamma-spectroscopy at the proton dripline: 23Al
LaBr3/Ce scintillators for in-beam gamma-ray spectroscopy with fast beams of rare isotopes
Structure of excited states in 21Mg studied in one-neutron knockout
C. Aa. Diget et al., Phys. Rev. C 77, 064309 (2008)
In-beam gamma-spectroscopy and inclusive two-proton knockout cross section measurements at N=40
P. Adrich et al., Phys. Rev. C 77, 054306 (2008)
Reduction of spectroscopic strength: weakly-bound and strongly-bound single-particle states studied using one-nucleon knockout reactions
A. Gade et al., Phys. Rev. C 77, 044306 (2008)
Shape coexistence in light Se isotopes: evidenec for oblate shapes
J. Ljungvall, A. Görgen et al., Phys. Rev. Lett. 100, 102502 (2008).
First measurement of the giant monopole and quadrupole resonances in a short-lived nucleus: 56Ni
C. Monrozeau et al., Phys. Rev. Lett. 100, 042501 (2008).
2007:
Spectroscopy of 20Mg: The isobaric mass multiplet equation for the 2+ states of the A=20, T=2 quintet and distant mirror nuclei
Resonance state in 7H
M. Caamano et al., Phys. Rev. Lett. 99, 062502 (2007).
Spectroscopy of 36Mg: interplay of normal and intruder configurations at the neutron-rich boundary of the "island of inversion"
A. Gade et al., Phys. Rev. Lett. 99, 072502 (2007).
Shape coexistence in neutron-deficient krypton isotopes
E. Clément, A. Görgen, W. Korten et al., Phys. Rev. C 75, 054313 (2007).
2006:
Maya, a gaseous active target
C.E. Demonchy et al., Nucl. Inst. and Meth. in Phys. Res. A 573, 145 (2006).
Gamma spectroscopy of 25,27Ne and 26,27Na
A. Obertelli et al., Phys. Rev. C 74, 064305 (2006).
Two-neutron knockout from neutron-deficient 34Ar, 30S, and 26Si
K. Yoneda, A. Obertelli et al., Phys. Rev. C 74, 021303 (2006).
Population of bound excited states in intermediate-energy fragmentation reactions
A. Obertelli et al., Phys. Rev. C 73, 044606 (2006).
Experimental evidence for subbshell closure in 8He and indication of a resonant state in 7He below 1 MeV
F. Skaza, V. Lapoux, N. Keeley et al., Phys. Rev. C 73, 044301 (2006)
Shell gap reduction in neutron-rich N=17 nuclei
A. Obertelli et al., Phys. Lett. B 633, 33 (2006).
A cryogenic target for direct reaction studies with exotic beams
P. Dolegieviez et al., Nucl. Inst. and Meth. in Phys. Res. A 564, 32 (2006).
2005:
N=16 subshell closure from stability to the neutron drip line
A. Obertelli, S. Péru, J. -P. Delaroche, A. Gillibert, M. Girod, and H. Goutte
Phys. Rev. C 71, 024304 (2005).
2003:
Structure of light exotic nuclei 6,8He and 10,11 C from (p,p') reactions
V. Lapoux et al., Nucl. Phys. A 722, 49c (2003).
