Now showing items 1-20 of 24

    • Astrophysical factor for the radiative capture reaction alpha+d->Li-6+gamma 

      Mukhamedzhanov, AM; Schmitt, R. P.; Tribble, Robert E.; Sattarov, A. (American Physical Society, 1995)
      We consider the radiative capture process alpha+d-->Li-6+gamma at energies, E(c.m.)less than or equal to 300 keV, that are relevant for astrophysical processes. Due to the peripheral character of the reaction, the overall ...
    • Astrophysical S factor for Be-9(p,gamma)B-10 

      Sattarov, A.; Mukhamedzhanov, AM; Azhari, A.; Gagliardi, Carl A.; Trache, L.; Tribble, Robert E. (American Physical Society, 1999)
      The Be-9(p, gamma) B-10 reaction plays an important role in primordial and stellar nucleosynthesis of light elements in the p shell, but the energy dependence of S(E) has not been well understood. We reanalyze the existing ...
    • Astrophysical S factor for C-13(p,gamma)N-14 and asymptotic normalization coefficients 

      Mukhamedzhanov, AM; Azhari, A.; Burjan, V.; Gagliardi, Carl A.; Kroha, V.; Sattarov, A.; Tang, X.; Trache, L.; Tribble, Robert E. (American Physical Society, 2002)
      We reanalyze the C-13(p,gamma)N-14 radiative capture reaction within the R-matrix approach. The low-energy astrophysical S factor has important contributions from both resonant and onresonant captures. The normalization ...
    • Asymptotic normalization coefficients and the Be-7(p, gamma)B-8 astrophysical S factor 

      Azhari, A.; Burjan, V.; Carstoiu, F.; Gagliardi, Carl A.; Kroha, V.; Mukhamedzhanov, AM; Nunes, FM; Tang, X.; Trache, L.; Tribble, Robert E. (American Physical Society, 2001)
      We consider the results of two proton transfer reactions, B-10(Be-7, B-8)Be-9 and N-14(Be-7, B-8)C-13, to obtain a weighted average of the measured asymptotic normalization coefficients for the virtual transition 7Be +pB-8. ...
    • Asymptotic normalization coefficients for 14N+p -> O-15 and the astrophysical S factor for N-14(p, gamma)O-15 

      Mukhamedzhanov, AM; Bem, P.; Brown, BA; Burjan, V.; Gagliardi, Carl A.; Kroha, V.; Novak, J.; Nunes, FM; Paskor, S.; Pirlepesov, F.; Simeckova, E.; Tribble, Robert E.; Vincour, J. (American Physical Society, 2003)
      The N-14(p,gamma)O-15 reaction, which controls energy production in the CNO cycle, has contributions from both resonance and direct captures to the ground and excited states. The overall normalization of the direct captures ...
    • Asymptotic normalization coefficients for B-10->Be-9+p 

      Mukhamedzhanov, AM; Clark, HL; Gagliardi, Carl A.; Lui, YW; Trache, L.; Tribble, Robert E.; Xu, HM; Zhou, XG; Burjan, V.; Cejpek, J.; Kroha, V.; Carstoiu, F. (American Physical Society, 1997)
      The differential cross sections for the reactions Be-9(B-10, B-10)Be-9 and Be-9(B-10,Be-9)B-10 have been measured at an incident energy of 100 MeV. The elastic scattering data have been used to determine the optical model ...
    • Asymptotic normalization coefficients for B-8 -> Be-7+p from a study of Li-8 -> Li-7+n 

      Trache, L.; Azhari, A.; Carstoiu, F.; Clark, HL; Gagliardi, Carl A.; Lui, YW; Mukhamedzhanov, AM; Tang, X.; Timofeyuk, N.; Tribble, Robert E. (American Physical Society, 2003)
      Asymptotic normalization coefficients (ANCs) for Li-8-->Li-7+n have been extracted from the neutron transfer reaction C-13(Li-7,Li-8)C-12 at 63 MeV. These are related to the ANCs in B-8-->Be-7 + p using charge symmetry. ...
    • Asymptotic normalization coefficients for C-13+p -> N-14 

      Trache, L.; Azhari, A.; Clark, HL; Gagliardi, Carl A.; Lui, YW; Mukhamedzhanov, AM; Tribble, Robert E.; Carstoiu, F. (American Physical Society, 1998)
      The C-13(N-14,C-13)N-14 proton exchange reaction has been measured at an incident energy of 162 MeV. Angular distributions were obtained for proton transfer to the ground and low-lying excited states in N-14. Elastic ...
    • Asymptotic normalization coefficients for N-14 C-13+p from C-13(He-3,d)N-14 

      Bem, P.; Burjan, V.; Kroha, V.; Novak, J.; Piskor, S.; Simeckova, E.; Vincour, J.; Gagliardi, Carl A.; Mukhamedzhanov, AM; Tribble, Robert E. (American Physical Society, 2000)
      The C-13(He-3,d) N-14 proton transfer reaction has been measured at an incident energy of 26.3 MeV. Angular distributions for proton transfer to the ground state and excited states at 2.313 and 3.948 MeV in N-14 are analyzed ...
    • Asymptotic normalization coefficients from the (20)Ne((3)He, d)(21)Na reaction and astrophysical factor for (20)Ne(p,gamma)(21)Na 

      Mukhamedzhanov, AM; Bem, P.; Burjan, V.; Gagliardi, Carl A.; Irgaziev, BF; Kroha, V.; Novak, J.; Piskor, S.; Simeckova, E.; Tribble, Robert E.; Vesely, F.; Vincour, J. (American Physical Society, 2006)
      The (20)Ne(p,gamma)(21)Na reaction rate at stellar energies is dominated by capture to the ground state through the tail of a subthreshold resonance state at an excitation energy of 2425 keV in (21)Na. Both resonant and ...
    • Asymptotic normalization coefficients, spectroscopic factors, and direct radiative capture rates 

      Mukhamedzhanov, AM; Gagliardi, Carl A.; Tribble, Robert E. (American Physical Society, 2001)
      We compare the use of asymptotic normalization coefficients (ANC's) and spectroscopic factors determined from peripheral transfer reactions for determining the overall normalization of peripheral direct radiative capture ...
    • Connection between asymptotic normalization coefficients, subthreshold bound states, and resonances 

      Mukhamedzhanov, AM; Tribble, Robert E. (American Physical Society, 1999)
      We present here useful relations showing the connection between the asymptotic normalization coefficient (ANC) and the fitting parameters in K- and R-matrix theory methods which are often used when analyzing low energy ...
    • Determination of the astrophysical S factor for C-11(p,gamma)N-12 from the N-12 -> C-11+p asymptotic normalization coefficient 

      Tang, XD; Azhari, A.; Gagliardi, Carl A.; Mukhamedzhanov, AM; Pirlepesov, F.; Trache, L.; Tribble, Robert E.; Burjan, V.; Kroha, V.; Carstoiu, F. (American Physical Society, 2003)
      The evolution of very low-metallicity, massive stars depends critically on the amount of CNO nuclei that they produce. Alternative paths from the slow 3alpha process to produce CNO seed nuclei could change their fate. The ...
    • Determination of the direct capture contribution for N-13(p,gamma)O-14 from the O-14 -> N-13+p asymptotic normalization coefficient 

      Tang, XD; Azhari, A.; Fu, CB; Gagliardi, Carl A.; Mukhamedzhanov, AM; Pirlepesov, F.; Trache, L.; Tribble, Robert E.; Burjan, V.; Kroha, V.; Carstoiu, F.; Irgaziev, BF. (American Physical Society, 2004)
      N-13(p, gamma)O-14 is one of the key reactions which trigger the onset of the hot CNO cycle. This transition occurs when the proton capture rate on 13N is faster, due to increasing stellar temperature (greater than or equal ...
    • Determination of the S-18 astrophysical factor for B-8(p,gamma)C-9 from the breakup of C-9 at intermediate energies 

      Trache, L.; Carstoiu, F.; Mukhamedzhanov, AM; Tribble, Robert E. (American Physical Society, 2002)
      We have used existing data on the one-proton-removal cross section of C-9 at 285 MeV/nucleon and Glauber model calculations to extract the asymptotic normalization coefficient for the wave function of the last proton in ...
    • Elastic scattering of the proton drip-line nucleus F-17 

      Blackmon, JC; Carstoiu, F.; Trache, L.; Bardayan, DW; Brune, CR; Gagliardi, Carl A.; Greife, U.; Gross, CJ; Jewett, CC; Kozub, R. L.; Lewis, TA; Liang, JF; Moazen, BH; Mukhamedzhanov, AM; Nesaraja, CD; Nunes, FM; Parker, PD; Sahin, L.; Scott, JP; Shapira, D.; Smith, MS; Thomas, JS; Tribble, Robert E. (American Physical Society, 2005)
      Precision data have been obtained for the elastic scattering of F-17 on C-12 and N-14 at 10 MeV/nucleon to clarify the reaction mechanism for loosely bound nuclei at low energies and to assess the validity of a double-folding ...
    • Long-range behavior of the optical potential for the elastic scattering of charged composite particles 

      Alt, EO; Mukhamedzhanov, AM (Physical Review A - Atomic, Molecular, and Optical Physics, 1995)
    • The N-14(Be-7,B-8)C-13 reaction and the Be-7(p,gamma)B-8 S factor 

      Azhari, A.; Burjan, V.; Carstoiu, F.; Gagliardi, Carl A.; Kroha, V.; Mukhamedzhanov, AM; Tang, X.; Trache, L.; Tribble, Robert E. (American Physical Society, 1999)
      The N-14(Be-7,B-8)C-13 reaction was studied using an 85 MeV Be-7 radioactive beam. The asymptotic normalization coefficients for the virtual transitions Be-7+pB-8 were determined from the measured cross section. These ...
    • Optical model potentials involving loosely bound p-shell nuclei around 10 MeV/nucleon 

      Trache, L.; Azhari, A.; Clark, HL; Gagliardi, Carl A.; Lui, YW; Mukhamedzhanov, AM; Tribble, Robert E.; Carstoiu, F. (American Physical Society, 2000)
      We present the results of a search for optical model potentials for use in the description of elastic scattering and transfer reactions involving stable and radioactive p-shell nuclei. This was done in connection with our ...
    • Possibility to Determine the Astrophysical S-Factor for the Be-7(p,gamma)b-8 Radiative-Capture from Analysis of the Be-7(he-3,d)b-8 Reaction 

      Mukhamedzhanov, AM; Tribble, Robert E.; imofeyuk, N. K. (American Physical Society, 1995)