Beyond the neutron drip line: The unbound oxygen isotopes $^{25}$O and $^{26}$O - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Physical Review C Year : 2013

Beyond the neutron drip line: The unbound oxygen isotopes $^{25}$O and $^{26}$O

C. Caesar , J. Simonis , T. Adachi , Y. Aksyutina , J. Alcantara , S. Altstadt , H. Alvarez-Pol , N. Ashwood , T. Aumann , V. Avdeichikov , M. Barr , S. Beceiro , D. Bemmerer , J. Benlliure , C.A. Bertulani , K. Boretzky , M.J.G. Borge , G. Burgunder (1) , M. Caamano , E. Casarejos , W. Catford , J. Cederkall , S. Chakraborty , M. Chartier , L. Chulkov , D. Cortina-Gil , U. Datta Pramanik , P. Diaz Fernandez , I. Dillmann , Z. Elekes , J. Enders , O. Ershova , A. Estrade , F. Farinon , L. M. Fraile , M. Freer , M. Freudenberger , H.O U. Fynbo , D. Galaviz , H. Geissel , R. Gernhauser , P. Golubev , D. Gonzalez Diaz , J. Hagdahl , T. Heftrich , M. Heil , M. Heine , A. Heinz , A. Henriques , M. Holl , J.D. Holt , G. Ickert , A. Ignatov , B. Jakobsson , H.T. Johansson , B. Jonson , N. Kalantar-Nayestanaki , R. Kanungo , A. Kelic-Heil , R. Knöbel , T. Kröll , R. Krucken , J. Kurcewicz , M. Labiche , C. Langer , T. Le Bleis , R. Lemmon , O. Lepyoshkina , S. Lindberg , J. Machado , J. Marganiec , V. Maroussov , J. Menendez , M. Mostazo , A. Movsesyan , A. Najafi , T. Nilsson , C. Nociforo , V. Panin , A. Perea , S. Pietri , R. Plag , A. Prochazka , A. Rahaman , G. Rastrepina , R. Reifarth , G. Ribeiro , M. V. Ricciardi , C. Rigollet , K. Riisager , M. Röder , D. Rossi , J. Sanchez del Rio , D. Savran , H. Scheit , A. Schwenk , H. Simon , O. Sorlin (1) , V. Stoica , B. Streicher , James Taylor , O. Tengblad , S. Terashima , R. Thies , Y. Togano , E. Uberseder , J. van de Walle , P. Velho , V. Volkov , A. Wagner , F. Wamers , H. Weick , M. Weigand , C. Wheldon , G. Wilson , C. Wimmer , J.S. Winfield , P. Woods , D. Yakorev , M.V. Zhukov , A. Zilges , M. Zoric , K. Zuber
C. Caesar
  • Function : Author
J. Simonis
  • Function : Author
T. Adachi
  • Function : Author
Y. Aksyutina
  • Function : Author
J. Alcantara
  • Function : Author
S. Altstadt
  • Function : Author
H. Alvarez-Pol
  • Function : Author
N. Ashwood
  • Function : Author
T. Aumann
  • Function : Author
V. Avdeichikov
  • Function : Author
M. Barr
  • Function : Author
S. Beceiro
  • Function : Author
D. Bemmerer
  • Function : Author
J. Benlliure
  • Function : Author
C.A. Bertulani
  • Function : Author
K. Boretzky
  • Function : Author
M.J.G. Borge
  • Function : Author
M. Caamano
  • Function : Author
E. Casarejos
  • Function : Author
W. Catford
  • Function : Author
J. Cederkall
  • Function : Author
S. Chakraborty
  • Function : Author
M. Chartier
  • Function : Author
L. Chulkov
  • Function : Author
D. Cortina-Gil
  • Function : Author
U. Datta Pramanik
  • Function : Author
P. Diaz Fernandez
  • Function : Author
I. Dillmann
  • Function : Author
Z. Elekes
J. Enders
  • Function : Author
O. Ershova
  • Function : Author
A. Estrade
  • Function : Author
F. Farinon
  • Function : Author
L. M. Fraile
  • Function : Author
M. Freer
  • Function : Author
M. Freudenberger
  • Function : Author
H.O U. Fynbo
  • Function : Author
D. Galaviz
  • Function : Author
H. Geissel
  • Function : Author
R. Gernhauser
  • Function : Author
P. Golubev
  • Function : Author
D. Gonzalez Diaz
  • Function : Author
J. Hagdahl
  • Function : Author
T. Heftrich
  • Function : Author
M. Heil
  • Function : Author
M. Heine
A. Heinz
  • Function : Author
A. Henriques
  • Function : Author
M. Holl
  • Function : Author
J.D. Holt
  • Function : Author
G. Ickert
  • Function : Author
A. Ignatov
  • Function : Author
B. Jakobsson
  • Function : Author
H.T. Johansson
  • Function : Author
B. Jonson
  • Function : Author
N. Kalantar-Nayestanaki
  • Function : Author
R. Kanungo
  • Function : Author
A. Kelic-Heil
  • Function : Author
R. Knöbel
  • Function : Author
T. Kröll
  • Function : Author
R. Krucken
  • Function : Author
J. Kurcewicz
  • Function : Author
M. Labiche
  • Function : Author
C. Langer
  • Function : Author
T. Le Bleis
  • Function : Author
R. Lemmon
  • Function : Author
O. Lepyoshkina
  • Function : Author
S. Lindberg
  • Function : Author
J. Machado
  • Function : Author
J. Marganiec
  • Function : Author
V. Maroussov
  • Function : Author
J. Menendez
  • Function : Author
M. Mostazo
  • Function : Author
A. Movsesyan
  • Function : Author
A. Najafi
  • Function : Author
T. Nilsson
C. Nociforo
  • Function : Author
V. Panin
  • Function : Author
A. Perea
  • Function : Author
S. Pietri
  • Function : Author
R. Plag
  • Function : Author
A. Prochazka
  • Function : Author
A. Rahaman
  • Function : Author
G. Rastrepina
  • Function : Author
R. Reifarth
  • Function : Author
G. Ribeiro
  • Function : Author
M. V. Ricciardi
  • Function : Author
C. Rigollet
  • Function : Author
K. Riisager
  • Function : Author
M. Röder
  • Function : Author
D. Rossi
  • Function : Author
J. Sanchez del Rio
  • Function : Author
D. Savran
  • Function : Author
H. Scheit
  • Function : Author
A. Schwenk
  • Function : Author
H. Simon
  • Function : Author
V. Stoica
  • Function : Author
B. Streicher
  • Function : Author
James Taylor
O. Tengblad
  • Function : Author
S. Terashima
  • Function : Author
R. Thies
  • Function : Author
Y. Togano
  • Function : Author
E. Uberseder
  • Function : Author
J. van de Walle
  • Function : Author
P. Velho
  • Function : Author
V. Volkov
  • Function : Author
A. Wagner
  • Function : Author
F. Wamers
  • Function : Author
H. Weick
  • Function : Author
M. Weigand
  • Function : Author
C. Wheldon
  • Function : Author
G. Wilson
  • Function : Author
C. Wimmer
  • Function : Author
J.S. Winfield
  • Function : Author
P. Woods
  • Function : Author
D. Yakorev
  • Function : Author
M.V. Zhukov
  • Function : Author
A. Zilges
  • Function : Author
M. Zoric
  • Function : Author
K. Zuber
  • Function : Author

Abstract

The very neutron-rich oxygen isotopes 25O and 26O are investigated experimentally and theoretically. The unbound states are populated in an experiment performed at the R3B-LAND setup at GSI via proton-knockout reactions from 26F and 27F at relativistic energies around 442 and 414 MeV/nucleon, respectively. From the kinematically complete measurement of the decay into 24O plus one or two neutrons, the 25O ground-state energy and width are determined, and upper limits for the 26O ground-state energy and lifetime are extracted. In addition, the results provide indications for an excited state in 26O at around 4MeV. The experimental findings are compared to theoretical shell-model calculations based on chiral two- and three-nucleon (3N) forces, including for the first time residual 3N forces, which are shown to be amplified as valence neutrons are added.

Dates and versions

in2p3-00862732 , version 1 (17-09-2013)

Identifiers

Cite

C. Caesar, J. Simonis, T. Adachi, Y. Aksyutina, J. Alcantara, et al.. Beyond the neutron drip line: The unbound oxygen isotopes $^{25}$O and $^{26}$O. Physical Review C, 2013, 88, pp.034313. ⟨10.1103/PhysRevC.88.034313⟩. ⟨in2p3-00862732⟩
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