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Nuclear Astrophysics in NPI ASCR Rez, Czech Republic

Nuclear Astrophysics in NPI ASCR Rez, Czech Republic. Outline: Hardware Indirect methods Experiments Collaborations. U120M cyclotron basic data. Isochronous cyclotron built in Dubna First run in 1977 Number of upgrades Harmonic coils Monochromator Axial injection Negative ions.

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Nuclear Astrophysics in NPI ASCR Rez, Czech Republic

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  1. Nuclear Astrophysicsin NPI ASCR Rez, Czech Republic Outline: Hardware Indirect methods Experiments Collaborations

  2. U120M cyclotronbasic data Isochronous cyclotron built in Dubna First run in 1977 Number of upgrades Harmonic coils Monochromator Axial injection Negative ions

  3. U120M cyclotronparameters Beams: p 10-25 MeV 5uA (H- 40uA 38MeV)‏ d 10-20 MeV 5uA (d- 25uA)‏ 3He 17-53 MeV 2uA alpha 20-40 MeV 5uA • Beams radiopharmacy N.A. experiments neutron generator activation experiments

  4. U120M cyclotron

  5. U120M cyclotronbeamline Monochromator magnet • Three experimental lines Amos – achromatic magnetooptical system system for zero-angle measurements

  6. U120M cyclotrontargets • Solid isotopicaly enriched targets • 14C (225, 295, 400 ug/cm2)‏ • 13C (395 ug/cm2)‏ Gas target chamber 15N, 17O,18O, 20Ne gases ...

  7. Nuclear astrophysics in NPI ASCRindirect methods Indirect methods ANC method Trojan Horse method

  8. Nuclear astrophysics in NPI ASCRANC method Indirect methods ANC method Method of Asymptotic Normalization Coeficients was developed and tested in cooperation with Texas A&M University. The first test of ANC method performed at NPI ASCR Rez using 16O(3He,d)17F Phys Rev C56 (1997) 1302 Phys Rev C59 (1999) 1149 Few-Body Syst.Suppl. (2000)102 Czech J.Phys 54 (2001)‏

  9. ANC methodprinciple direct radiative capture from - transfer reaction the radial overlap function and DWBA cross section: For peripheral reaction: C is ANC b is S.P.ANC

  10. ANC method While spectroscopic factors depend on the potential geometry factors, ANC (from a peripheral transfer) depend at mostweakly on potential geometry. Cross sections of astrophysical direct radiative capture reactions (p, ) or (n, etc... are related to ( C )2

  11. 9Be + p10B 12C + p13N 13C + p14N 14N + p15O 16O + p17F 15N + p 16O 14C + n15C 18O + p 19F 20Ne + p21Na Astrophysical experimentsANC measurements at NPI ASCR Rez

  12. Trojan Horse Methodpriciples Binary reaction via three-particle reaction • beam energy • detection angle • good TH projectile • quasifree condition • complete kinematics U120M's Trojan Horses 2H, 3He

  13. Recent experiments in NPI ASCR New astrophysical S factor for the 15N(p,gamma)16O - CN cycle transform to CNO II, CNO III - dominated by resonant capture to g.s. through two J=1- res. S(0)=36.0 (6.0) keV b (LUNA: S(0)=39.6 - PRC82, 55804 (2010)) rate of leak from CN cycle - - one in every 2200 (300) (previously 1200) A.M.Mukhamedzhanov et al., Phys.Rev.C78, 015804 (2008) A.M.Mukhamedzhanov et al.,Phys.Rev. C83, 044604 (2011)

  14. Recent experiments in NPI ASCR Trojan horse particle invariance studied with the 6Li(d,alpha)4He and 7Li(p,alpha)4He - the PWA approach is valid -THM is independent on a spectator particle R.G.Pizzone et al., Phys.Rev.C83, 045801 (2011)

  15. Recent experiments in NPI ASCR Low-energy d+d fusion reactions via the Trojan Horse Method A.Tumino et al., Phys.Lett.B 700 (2011)111 2H(d,p)3H S(0)=57.4 (1.8) MeVb 2H(d,n)3He S(0)=60.1 (1.9) MeVb -Big Bang Nucleosynthesis -Pre-Main Sequence stars -future fusion reactors Bare nucleus reaction rates change by >15%

  16. LEA NuAGAssociated laboratory – Nuclear Astrophysics and Grids Four years project of virtual laboratory support the contacts between the parties and benefit from synergies in common topics SPIRAL 2 construction and access

  17. LEA NuAGAssociated laboratory – Nuclear Astrophysics and Grids experiment : production in 3He(12C,n) on U120M 14O(alpha,p) experiment in GANIL 2011/06 target station construction for SPIRAL 2 (AFAC) - 14O prod. Hot burning cycles: an interesting isotope 14O A.Pichard et al., EPJA (2011) 47, 72

  18. LEA NuAGAssociated laboratory – Nuclear Astrophysics and Grids SPIRAL2 / NFS activation - excitation functions for IFMIF / ITER U120M Ed up to 20MeV, S2/NFS Ed up to 40MeV irradiation chamber + pneumatic system (+KIT) d-breakup contribution to the reactions (+INFN HH Bucharest)

  19. Support project of MŠMT(CR) – LH 11001 Asymptotic Normalization Coefficients and Trojan Horse Methods in Nuclear Astrophysics. by grant of GAČR P203/10/0310 Astrophysical Nuclear Reactions and Further Development of the Indirect Methods by Centrum of Nuclear astrophysics and Nuclear Physics (MED)‏ by ASCR - Program of internal support of international projects

  20. Collaborators NPI ASCR(CR) : P.Bém, V.Burjan, Z.Hons, V.Kroha, M.Majerle, J.Mrázek, J.Novák, Š.Piskoř, E.Šimečková TAMU(USA) : C.A.Gagliardi, A.M.Mukhamedzhanov, A.Sattarov, X.Tang, L.Trache, R.E.Tribble INFN-LNS(Italy) : M.LaCognata, L.Lamia, R.G.Pizzone, S.Romano, C.Spitaleri, S.Tudisco, A.Tumino, S.Cherubini, M.L.Sergi INF Debrecen(Hungary):Z.Fülop,E.Somorjai,G.Kiss GANIL (France) F.d.Oliviera-Santos, M.Lewitowicz, M.G.Saint-Laurent, G.Lhersonneau

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