Nuclear reactions studies in Spain (theory)
Transcript Of Nuclear reactions studies in Spain (theory)
Nuclear reactions studies in Spain (theory)
Antonio M. Moro Muñoz Universidad de Sevilla
Outline:
● Current groups working in nuclear reactions ● A flavour on recent research activities
✔ Developments in nuclear reaction theory ✔ Collaborations with experimental groups ● Challenges for the near future
Nuclear Reactions in Spain
Santiago
Madrid Valencia
UHU
USE
USE
Theory: - Madrid (IEM, UCM) - Huelva (UHU) - Sevilla (USE)
Experiments: - Madrid (IEM) - Huelva - Santiago de Comp. - Sevilla (USE/CNA) - Valencia
Nuclear Reactions at Madrid (IEM/CSIC, UCM)
(E. Garrido, R. Álvarez-Rodríguez, R. de Diego (*), C. Redondo(*)
Few-body structure and reactions:
• Bound and continuum states of three-body light nuclei (11Li, 12Be,...) • Few-body reactions at low energies of astrophysical interest
(α+α+α → 12C, α+α+n → 9Be) • Variational description of continuum states in terms of integral relations.
AAftfeterrththeeccoorereccoollalappssee, ,ththee tetemmpp8eB8erBeareatiustiusruerunenbinbionocucurnerndeadasseess, ,aannddfoforr
TT~~110088KK……
.....t.htheetrtripiplele-a-alplphhaarreeaacctitoionnisisrreelelevvaanntt!!!!
TThheettrripiplele--aalplphhaarreeaaccttioionnbbrrididggeesstthheeAA==55,,88ggaappaannddppeerrmmititss tthheeaappppeeaarraanncceeinintthheeUUnniviveerrsseeooffhheeaavvyynnuucclelei i
Direct versus sequential capture mechanism
11))SSeeqquueennttiaial:l: αα++αα→→88BBee**++γγ
88BBee**++αα →→1212CC 22))DDirireecctt:: αα++αα++αα→→1212CC++γγ
3-body problem → Faddeev equations
AA ddirireecctt ccaappttuurree mmeecchhaannisismm ccaann ininccrreeaassee tthhee rreeaaccttioionn rraattee uupp ttoo 77 oorrddeerrss ooff mmaaggnnitituuddee aatt loloww tteemmppeerraattuurreess. .
Nuclear Reactions at Seville (theory)
(M.V. Andrés, J.M. Arias, F. Barranco, J. Casal-Berbel (PhD),C. Dasso, J. GómezCamacho, J.A. Lay (PhD), A.M. Moro, G. Potel (*) J.M. Quesada, M. Rodríguez-Gallardo)
1) Developments in nuclear reaction theory ➔ Dispersive Lane-consistent optical potentials ➔ Resonant & non-resonant 2- and 3-body continuum of exotic nuclei ➔ Extension of CDCC method to 3-body nuclei and core excitation ➔ Two-particle transfer reactions
2) Theory support to experimental collaborations ➔ Sevilla-IEM-Huelva collaboration (CNA,TRIUMF, LLN, GANIL...) ➔ ISOLDE ➔ RIBRAS, ➔ etc
A Lane consistent optical model potential for nucleon induced reactions on actinides with full coupling
J. M. Quesada, Departamento de FAMN, Seville Roberto Capote, IAEA Nuclear Data Section, Vienna Efrem Soukhovitskii, Joint Institute for Energy and Nuclear Research, Minsk-Sosny, Belarus
+..+
Phenomenological potential with strong theoretical constraints : less parameters and enhanced predictability
Global fitting to the available exp. db: total xs, angular distributions, strenght functions.. The coupling scheme includes: All states bellow 1 MeV (17 for 238U) + 2 IAS states
Used in nuclear data evaluations
Included in RIPL: entries 2408, 2409, 5408, 5409, 5412
Tries 2408,5
Microscopic calculations of two-nucleon transfer
(P. Barranco (USE), G. Potel (USE), R. Broglia (Milan))
IInnffoorrmmaattioionnoonn::
●●PPaairirininggccoorrrreelalattioionnss ●●RReeaaccttioionnmmeecchhaannisismm ((sseeqquueennttiaial lvvssssimimuultltaanneeoouuss)) ●●TTwwoo--ppaarrtticiclelessppeecc. .ffaaccttoorrss
Antonio M. Moro Muñoz Universidad de Sevilla
Outline:
● Current groups working in nuclear reactions ● A flavour on recent research activities
✔ Developments in nuclear reaction theory ✔ Collaborations with experimental groups ● Challenges for the near future
Nuclear Reactions in Spain
Santiago
Madrid Valencia
UHU
USE
USE
Theory: - Madrid (IEM, UCM) - Huelva (UHU) - Sevilla (USE)
Experiments: - Madrid (IEM) - Huelva - Santiago de Comp. - Sevilla (USE/CNA) - Valencia
Nuclear Reactions at Madrid (IEM/CSIC, UCM)
(E. Garrido, R. Álvarez-Rodríguez, R. de Diego (*), C. Redondo(*)
Few-body structure and reactions:
• Bound and continuum states of three-body light nuclei (11Li, 12Be,...) • Few-body reactions at low energies of astrophysical interest
(α+α+α → 12C, α+α+n → 9Be) • Variational description of continuum states in terms of integral relations.
AAftfeterrththeeccoorereccoollalappssee, ,ththee tetemmpp8eB8erBeareatiustiusruerunenbinbionocucurnerndeadasseess, ,aannddfoforr
TT~~110088KK……
.....t.htheetrtripiplele-a-alplphhaarreeaacctitoionnisisrreelelevvaanntt!!!!
TThheettrripiplele--aalplphhaarreeaaccttioionnbbrrididggeesstthheeAA==55,,88ggaappaannddppeerrmmititss tthheeaappppeeaarraanncceeinintthheeUUnniviveerrsseeooffhheeaavvyynnuucclelei i
Direct versus sequential capture mechanism
11))SSeeqquueennttiaial:l: αα++αα→→88BBee**++γγ
88BBee**++αα →→1212CC 22))DDirireecctt:: αα++αα++αα→→1212CC++γγ
3-body problem → Faddeev equations
AA ddirireecctt ccaappttuurree mmeecchhaannisismm ccaann ininccrreeaassee tthhee rreeaaccttioionn rraattee uupp ttoo 77 oorrddeerrss ooff mmaaggnnitituuddee aatt loloww tteemmppeerraattuurreess. .
Nuclear Reactions at Seville (theory)
(M.V. Andrés, J.M. Arias, F. Barranco, J. Casal-Berbel (PhD),C. Dasso, J. GómezCamacho, J.A. Lay (PhD), A.M. Moro, G. Potel (*) J.M. Quesada, M. Rodríguez-Gallardo)
1) Developments in nuclear reaction theory ➔ Dispersive Lane-consistent optical potentials ➔ Resonant & non-resonant 2- and 3-body continuum of exotic nuclei ➔ Extension of CDCC method to 3-body nuclei and core excitation ➔ Two-particle transfer reactions
2) Theory support to experimental collaborations ➔ Sevilla-IEM-Huelva collaboration (CNA,TRIUMF, LLN, GANIL...) ➔ ISOLDE ➔ RIBRAS, ➔ etc
A Lane consistent optical model potential for nucleon induced reactions on actinides with full coupling
J. M. Quesada, Departamento de FAMN, Seville Roberto Capote, IAEA Nuclear Data Section, Vienna Efrem Soukhovitskii, Joint Institute for Energy and Nuclear Research, Minsk-Sosny, Belarus
+..+
Phenomenological potential with strong theoretical constraints : less parameters and enhanced predictability
Global fitting to the available exp. db: total xs, angular distributions, strenght functions.. The coupling scheme includes: All states bellow 1 MeV (17 for 238U) + 2 IAS states
Used in nuclear data evaluations
Included in RIPL: entries 2408, 2409, 5408, 5409, 5412
Tries 2408,5
Microscopic calculations of two-nucleon transfer
(P. Barranco (USE), G. Potel (USE), R. Broglia (Milan))
IInnffoorrmmaattioionnoonn::
●●PPaairirininggccoorrrreelalattioionnss ●●RReeaaccttioionnmmeecchhaannisismm ((sseeqquueennttiaial lvvssssimimuultltaanneeoouuss)) ●●TTwwoo--ppaarrtticiclelessppeecc. .ffaaccttoorrss