Transfer to the continuum of 11Be with the application of ab-initio S-matrix

The 9Be(18O,16O)11Be two-neutron transfer reaction at 84 MeV is measured at forward angles to explore the continuum of 11Be nucleus. Transfer-to-the-continuum (TC) reaction calculations are applied using for the first time an ab-initio S-matrix. It is derived from the ab-initio no-core shell model with continuum (NCSMC) method, recently used to describe the bound and continuum spectrum of 11Be. Previously known levels are confirmed and theoretical and experimental evidence for a 9/2+ state at Ex = 5.8 MeV is given, whose configuration is thought to be 10Be(2+) + n(d5/2).

[1]  H. Fortune.  Matter radii and configuration mixing in 15-19C , 2018 .

[2]  G. Santagati,et al.  Analysis of pairing correlations in neutron transfer reactions and comparison to the constrained molecular dynamics model , 2018 .

[3]  J. Kelley,et al.  Energy levels of light nuclei A = 12 , 2017 .

[4]  G. Santagati,et al.  Long-range versus short-range correlations in the two-neutron transfer reaction 64 Ni( 18 O, 16 O) 66 Ni , 2017 .

[5]  G. Santagati,et al.  Microscopic cluster model for the description of new experimental results on the C13(O18,O16)C15 two-neutron transfer at 84 MeV incident energy , 2017 .

[6]  R. Broglia,et al.  Structure and Reactions of ^{11}Be: Many-Body Basis for Single-Neutron Halo. , 2017, Physical review letters.

[7]  A. Bonaccorso,et al.  Imaginary part of the C 9 − Be 9 single-folded optical potential , 2016 .

[8]  G. Santagati,et al.  Two-neutron transfer analysis of the O 16 ( O 18 , O 16 ) O 18 reaction , 2016 .

[9]  S. Quaglioni,et al.  Can Ab Initio Theory Explain the Phenomenon of Parity Inversion in ^{11}Be? , 2016, Physical review letters.

[10]  L. Pandola,et al.  Neutron decay of C15 resonances by measurements of neutron time-of-flight , 2016 .

[11]  F. Cappuzzello,et al.  The MAGNEX spectrometer: Results and perspectives , 2016, 1606.06731.

[12]  D. Carbone.  Signals of the Giant Pairing Vibration in 14C and 15C nuclei populated by (18O,16O) two-neutron transfer reactions , 2015 .

[13]  A. Cunsolo,et al.  Signatures of the Giant Pairing Vibration in the 14C and 15C atomic nuclei , 2015, Nature Communications.

[14]  A. Bonaccorso,et al.  Optical potential for then-9Be reaction , 2014 .

[15]  M. S. Smith,et al.  Reactions of a 10 Be beam on proton and deuteron targets , 2013, 1311.3205.

[16]  A. Cunsolo,et al.  New structures in the continuum of 15C populated by two-neutron transfer , 2012 .

[17]  F. Cappuzzello,et al.  The low-pressure focal plane detector of the MAGNEX spectrometer , 2012 .

[18]  F. Cappuzzello,et al.  Measuring the ions momentum vector with a large acceptance magnetic spectrometer , 2011 .

[19]  A. Cunsolo,et al.  Transport efficiency in large acceptance spectrometers , 2011 .

[20]  A. Cunsolo,et al.  A particle identification technique for large acceptance spectrometers , 2010 .

[21]  T. Kokalova,et al.  Neutron decay widths of excited states ofBe11 , 2009 .

[22]  K. P. Jackson,et al.  Study of 11Be structure through β-delayed decays from polarized 11Li , 2005 .

[23]  E. Poirier,et al.  New information on the beta-decay of Li-11 from Doppler broadened gamma lines , 2004 .

[24]  G. Blanchon,et al.  Unbound exotic nuclei studied by transfer to the continuum reactions , 2004, nucl-th/0402050.

[25]  T. Kokalova,et al.  Structure of neutron-rich Be and C isotopes , 2003 .

[26]  T. Massey,et al.  Structure studies of neutron-rich beryllium and carbon isotopes , 2003 .

[27]  F. Hofmann,et al.  Probing isospin dynamics in halo nuclei , 2000, nucl-th/0012082.

[28]  L. Rosier,et al.  Excited states of 11Be , 2000 .

[29]  W. Oertzen.  Two-center molecular states in9B,9Be,10Be, and10B , 1996 .

[30]  N. Mau.  Particle-vibration coupling in one neutron halo nuclei , 1995 .

[31]  Brink,et al.  Stripping to the continuum of 208Pb. , 1991, Physical review. C, Nuclear physics.

[32]  Brink,et al.  Absorption versus breakup in heavy-ion reactions. , 1991, Physical review. C, Nuclear physics.

[33]  Liu,et al.  9Be(t,p)11Be and the structure of 11Be. , 1990, Physical review. C, Nuclear physics.

[34]  Brink,et al.  Nucleon transfer to continuum states. , 1987, Physical review. C, Nuclear physics.

[35]  D. Brink,et al.  Nucleon transfer in heavy-ion reactions: energy dependence of the cross section , 1987 .