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Meeting – Prague, June 2011 Jaromir Mrazek, NPI ASCR Rez Nuclear Astrophysics in NPI ASCR Rez, Czech Republic Outline: Hardware Indirect methods Experiments.

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Presentation on theme: "Meeting – Prague, June 2011 Jaromir Mrazek, NPI ASCR Rez Nuclear Astrophysics in NPI ASCR Rez, Czech Republic Outline: Hardware Indirect methods Experiments."— Presentation transcript:

1 meeting – Prague, June 2011 Jaromir Mrazek, NPI ASCR Rez Nuclear Astrophysics in NPI ASCR Rez, Czech Republic Outline: Hardware Indirect methods Experiments Collaborations

2 meeting – Prague, June 2011 Jaromir Mrazek, NPI ASCR Rez U120M cyclotron basic data Isochronous cyclotron built in Dubna First run in 1977 Number of upgrades Harmonic coils Monochromator Axial injection Negative ions

3 meeting – Prague, June 2011 Jaromir Mrazek, NPI ASCR Rez U120M cyclotron parameters Beams: p MeV 5uA (H- 40uA 38MeV) d MeV 5uA (d- 25uA) 3 He MeV 2uA alpha MeV 5uA Beams radiopharmacy N.A. experiments neutron generator activation experiments

4 meeting – Prague, June 2011 Jaromir Mrazek, NPI ASCR Rez U120M cyclotron

5 meeting – Prague, June 2011 Jaromir Mrazek, NPI ASCR Rez U120M cyclotron beamline Monochromator magnet Three experimental lines Amos – achromatic magnetooptical system system for zero-angle measurements

6 meeting – Prague, June 2011 Jaromir Mrazek, NPI ASCR Rez U120M cyclotron targets Solid isotopicaly enriched targets 14 C (225, 295, 400 ug/cm2) 13 C (395 ug/cm2) Gas target chamber 15 N, 17 O, 18 O, 20 Ne gases...

7 meeting – Prague, June 2011 Jaromir Mrazek, NPI ASCR Rez Nuclear astrophysics in NPI ASCR indirect methods Indirect methods ANC method Trojan Horse method

8 meeting – Prague, June 2011 Jaromir Mrazek, NPI ASCR Rez Nuclear astrophysics in NPI ASCR ANC 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 16 O( 3 He,d) 17 F Phys Rev C56 (1997) 1302 Phys Rev C59 (1999) 1149 Few-Body Syst.Suppl. (2000)102 Czech J.Phys 54 (2001)

9 meeting – Prague, June 2011 Jaromir Mrazek, NPI ASCR Rez ANC method principle direct radiative capture from - transfer reaction the radial overlap function and DWBA cross section: For peripheral reaction: Cis ANC b is S.P.ANC

10 meeting – Prague, June 2011 Jaromir Mrazek, NPI ASCR Rez ANC method While spectroscopic factors depend on the potential geometry factors, ANC (from a peripheral transfer) depend at most weakly on potential geometry. Cross sections of astrophysical direct radiative capture reactions (p, ) or (n, etc... are related to ( C ) 2

11 meeting – Prague, June 2011 Jaromir Mrazek, NPI ASCR Rez 9 Be + p 10 B 12 C + p 13 N 13 C + p 14 N 14 N + p 15 O 16 O + p 17 F 15 N + p 16 O 14 C + n 15 C 18 O + p 19 F 20 Ne + p 21 Na Astrophysical experiments ANC measurements at NPI ASCR Rez

12 meeting – Prague, June 2011 Jaromir Mrazek, NPI ASCR Rez Trojan Horse Method priciples U120M's Trojan Horses 2 H, 3 He Binary reaction via three-particle reaction beam energy detection angle good TH projectile quasifree condition complete kinematics

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

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

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

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

18 meeting – Prague, June 2011 Jaromir Mrazek, NPI ASCR Rez LEA NuAG Associated laboratory – Nuclear Astrophysics and Grids SPIRAL2 / NFS activation - excitation functions for IFMIF / ITER U120M E d up to 20MeV, S2/NFS E d up to 40MeV irradiation chamber + pneumatic system (+KIT) d-breakup contribution to the reactions (+INFN HH Bucharest)

19 meeting – Prague, June 2011 Jaromir Mrazek, NPI ASCR Rez Support project of MŠMT(CR) – LH 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 meeting – Prague, June 2011 Jaromir Mrazek, NPI ASCR Rez 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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