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NSR database version of April 26, 2024.

Search: Author = C.Grama

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2006AS02      Phys.Rev. C 73, 055801 (2006)

M.Assuncao, M.Fey, A.Lefebvre-Schuhl, J.Kiener, V.Tatischeff, J.W.Hammer, C.Beck, C.Boukari-Pelissie, A.Coc, J.J.Correia, S.Courtin, F.Fleurot, E.Galanopoulos, C.Grama, F.Haas, F.Hammache, F.Hannachi, S.Harissopulos, A.Korichi, R.Kunz, D.LeDu, A.Lopez-Martens, D.Malcherek, R.Meunier, Th.Paradellis, M.Rousseau, N.Rowley, G.Staudt, S.Szilner, J.P.Thibaud, J.L.Weil

E1 and E2 S factors of ¹²C(α, γ₀)¹⁶0 from γ-ray angular distributions with a 4π-detector array

NUCLEAR REACTIONS ¹²C(α, γ), E(cm)=1.30-2.78 MeV; measured Eγ, Iγ(θ); deduced E1 and E2 astrophysical S-factors.

doi: 10.1103/PhysRevC.73.055801
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1420.

2005GR39      Rom.J.Phys. 50, 177 (2005)

N.Grama, C.Grama, I.Zamfirescu

Exotic resonant states corresponding to poles situated at the attractors in the k-plane

NUCLEAR REACTIONS ¹²C, ¹⁶O(¹²C, X), ¹⁶O(¹⁶O, X), E not given; calculated quasimolecular states energies vs spin.

2005HA16      Nucl.Phys. A752, 514c (2005)

J.W.Hammer, M.Fey, R.Kunz, J.Kiener, V.Tatischeff, F.Haas, J.L.Weil, M.Assuncao, C.Beck, C.Boukari-Pelissie, A.Coc, J.J.Correia, S.Courtin, F.Fleurot, E.Galanopoulos, C.Grama, F.Hammache, S.Harissopulos, A.Korichi, E.Krmpotic, D.Le Du, A.Lopez-Martens, D.Malcherek, R.Meunier, P.Papka, T.Paradellis, M.Rousseau, N.Rowley, G.Staudt, S.Szilner

New determination of the ¹²C(α, γ)¹⁶O reaction rate from γ-ray angular distribution measurements

NUCLEAR REACTIONS ¹²C(α, γ), E(cm)=0.89-2.8 MeV; measured σ(θ), S-factors; deduced astrophysical reaction rate.

doi: 10.1016/j.nuclphysa.2005.02.056
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1420.

2005HA48      Nucl.Phys. A758, 363c (2005)

J.W.Hammer, M.Fey, R.Kunz, J.Kiener, V.Tatischeff, F.Haas, J.L.Weil, M.Assuncao, C.Beck, C.Boukari-Pelissie, A.Coc, J.J.Correia, S.Courtin, F.Fleurot, E.Galanopoulos, C.Grama, F.Hammache, S.Harissopulos, A.Korichi, E.Krmpotic, D.Le Du, A.Lopez-Martens, D.Malcherek, R.Meunier, P.Papka, T.Paradellis, M.Rousseau, N.Rowley, G.Staudt, S.Szilner

E1 and E2 capture cross section and astrophysical reaction rate of the key reaction ¹²C(α, γ)¹⁶O

NUCLEAR REACTIONS ¹²C(α, γ), E(cm)=0.89-2.8 MeV; measured Eγ, Iγ, angular distributions; deduced S-factors for E1 and E2 capture. Eurogam and Gandi arrays, astrophysical implications discussed.

doi: 10.1016/j.nuclphysa.2005.05.066
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1420.

2003DE27      Nucl.Phys. A718, 510c (2003)

P.Demetriou, C.Grama, S.Goriely

Improved Global α-Optical Model Potential at Low Energies

NUCLEAR REACTIONS ⁵⁸Ni, ⁷⁰Ge, ⁹⁰Zr, ¹⁴⁴Sm, ²⁰⁸Pb(α, X), E(cm)=0-150 MeV; calculated optical model potential, volume integrals. ¹⁴⁴Sm(α, γ), E(cm)=9-13.5 MeV; calculated astrophysical S-factor. A=20-200; calculated Maxwellian-averaged α-capture rates.

doi: 10.1016/S0375-9474(03)00827-3
Citations: PlumX Metrics

2002DE37      Nucl.Phys. A707, 253 (2002)

P.Demetriou, C.Grama, S.Goriely

Improved Global α-Optical Model Potentials at Low Energies

NUCLEAR REACTIONS ⁴⁰Ca, ⁵⁶Ni, ⁷⁰Ge, ⁹⁰Zr, ⁹²Mo, ¹⁴⁰Ce, ¹⁴¹Pr, ¹⁴⁴Sm, ²⁰⁸Pb(α, α), E ≈ 13-32 MeV; calculated σ(θ). ³⁷Cl, ⁴²Ca, ⁵⁶Fe, ^58,62,64Ni, ⁷⁰Ge, ¹⁰⁶Cd, ¹⁴⁴Sm(α, γ), E(cm) ≈ 2-20 MeV; ²⁷Al, ³⁵Cl, ⁴⁵Sc, ^46,48Ti, ⁵⁰Cr, ⁵¹V, ⁵⁴Fe, ⁵⁹Co(α, n), E(cm) ≈ 4-20 MeV; ³⁹K, ^42,43,44Ca, ⁴⁴Ti, ⁵³Cr, ⁵⁴Fe, ^56,62Ni, ⁶⁴Zn, ⁹²Mo, ¹⁰⁶Cd(α, p), E(cm) ≈ 4-25 MeV; ^48,50Ti, ⁵¹V, ⁵²Cr, ⁵⁴Fe, ⁵⁹Co, ^64,68Zn, ^90,94Zr, ¹¹²Cd, ¹⁴⁷Sm(n, α), E(cm) ≈ 4-20 MeV; calculated σ. Global α-nucleus optical potential, comparisons with data.

doi: 10.1016/S0375-9474(02)00756-X
Citations: PlumX Metrics

1999AN35      Nucl.Phys. A656, 3 (1999)

C.Angulo, M.Arnould, M.Rayet, P.Descouvemont, D.Baye, C.Leclercq-Willain, A.Coc, S.Barhoumi, P.Aguer, C.Rolfs, R.Kunz, J.W.Hammer, A.Mayer, T.Paradellis, S.Kossionides, C.Chronidou, K.Spyrou, S.Degl'Innocenti, G.Fiorentini, B.Ricci, S.Zavatarelli, C.Providencia, H.Wolters, J.Soares, C.Grama, J.Rahighi, A.Shotter, M.Lamehi-Rachti

A Compilation of Charged-Particle Induced Thermonuclear Reaction Rates

COMPILATION ¹H(p, e⁺ν), ²H, ^6,7Li, ^7,9Be, ^10,11B, ^12,13C, ^13,14,15N, ^16,17,18O, ¹⁹F, ^20,21,22Ne, ^22,23Na, ^24,25,26Mg, ^26,27Al, ²⁸Si(p, γ), ²H(d, γ), (d, p), ^2,3H(d, n), ^2,3H, ³He, ⁷Li, ⁷Be, ¹²C, ^14,15N, ^16,18O, ^20,22Ne(α, γ), ³He(³He, 2p), ^6,7Li, ⁹Be, ^10,11B, ^14,15N, ^17,18O, ¹⁹F, ²⁰Ne, ²³Na, ²⁴Mg, ²⁷Al(p, α), ⁷Li, ⁹Be, ¹³C, ¹⁴N, ^17,18O, ^21,22Ne, ²³Na, ^25,26Mg, ²⁷Al(α, n), ⁹Be, ¹¹B, ¹³C, ^14,15N, ¹⁹F, ²³Na(p, n), ⁹Be(p, d), E < 10 MeV; compiled, analyzed σ, S-factors; calculated astrophysical reaction rates vs T₉. Analytical approximations.

doi: 10.1016/S0375-9474(99)00030-5
Citations: PlumX Metrics

1997GR10      Nucl.Phys. A621, 315c (1997)

C.Grama, N.Grama, I.Zamfirescu

New Class of Resonant States. Possible Application to Astrophysics

doi: 10.1016/S0375-9474(97)00262-5
Citations: PlumX Metrics

1996PI15      Nucl.Instrum.Methods Phys.Res. B118, 186 (1996)

N.Piel, W.H.Schulte, M.Berheide, H.W.Becker, L.Borucki, C.Grama, M.Mehrhoff, C.Rolfs

Efficient γ-Ray Detection in Ion Beam Analysis

NUCLEAR REACTIONS ²⁹Si(p, γ), E=325, 420 MeV; measured Eγ, Iγ; deduced resonance yields.

doi: 10.1016/0168-583X(95)01453-5
Citations: PlumX Metrics

1995GR18      Z.Phys. A353, 167 (1995)

C.Grama, N.Grama, I.Zamfirescu

Approximate Penetration Factor and Reduced Width for a Diffuse Edge Well

doi: 10.1007/BF01295894
Citations: PlumX Metrics

1994GR26      Ann.Phys.(New York) 232, 243 (1994)

C.Grama, N.Grama, I.Zamfirescu

New Class of Resonant States for Potentials with Coulomb Barrier: Quasimolecular states

NUCLEAR REACTIONS ²⁴Mg, ²⁸Si, ¹²C(¹²C, X), (¹⁶O, X), ¹⁶O(¹⁶O, X), ²⁴Mg(²⁴Mg, X), E not given; ²⁸Si, ²⁰Ne(¹⁶O, X), E not given; calculated quasimolecular state excitation. Extended S-matrix poles identification global method.

doi: 10.1006/aphy.1994.1054
Citations: PlumX Metrics

1993IL01      Nucl.Phys. A559, 83 (1993)

C.Iliadis, J.Gorres, J.G.Ross, K.W.Scheller, M.Wiescher, C.Grama, Th.Schange, H.P.Trautvetter, H.C.Evans

Explosive Hydrogen Burning of ³¹P

NUCLEAR REACTIONS, ICPND ³¹P(p, γ), (p, α), E=160-370 keV; ²⁸Si(α, γ), E=2.4-2.6 MeV; measured γ yield vs E; deduced stellar reaction rates, temperature dependence. ³²S deduced proton thershold state features.

doi: 10.1016/0375-9474(93)90181-V
Citations: PlumX Metrics

1992GR15      Rev.Roum.Phys. 37, 161 (1992)

C.Grama, N.Grama, I.Zamfirescu

Quasimolecular States - A Particular Case of a New Class Resonant States

NUCLEAR REACTIONS ²⁰Ne(α, α), ²⁴Mg, ²⁸Si, ¹⁶O, ¹²C(¹²C, ¹²C), ²⁸Si, ¹⁶O(¹⁶O, ¹⁶O), E not given; calculated quasimolecular state excitation energies; deduced new classes of poles of S-matrix. Central potential, nonrelativistic scattering, Riemamann surfaces.

1989BR14      Z.Phys. A333, 71 (1989)

I.M.Brancus, I.Berceanu, A.Buta, A.Demian, C.Grama, I.Lazar, I.Mihai, M.Petrascu, V.Simion, A.Constantinescu

Dynamical Analysis of Deep Inelastic Interactions in a Light Composite System (¹⁹F + ²⁴Mg) at About 1.3 MeV/u Above the Coulomb Barrier

NUCLEAR REACTIONS ²⁴Mg(¹⁹F, X), E=72 MeV; measured σ(fragment θ, E) for fragment Z ≤ 8; calculated σ(θ, A); deduced reaction dynamics. Dynamical model analysis.

1987BE55      Rev.Roum.Phys. 32, 961 (1987)

I.Berceanu, I.Brancus, A.Buta, A.Demian, C.Grama, I.Lazar, I.Mihai, M.Petrascu, M.Petrovici, V.Simion, K.V.Karadjev, A.A.Korsheninnikov, I.B.Mazurov, S.B.Sakuta, A.A.Ogloblin

Deep Inelastic Interaction in the System ¹⁴N(110 MeV) + ²⁴Mg

NUCLEAR REACTIONS ²⁴Mg(¹⁴N, X), E=110 MeV; measured σ(fragment θ) vs fragment kinetic energy for Z=5-8; deduced reaction mechanism.

1987BR34      Rev.Roum.Phys. 32, 733 (1987)

I.M.Brancus, A.Constantinescu, I.Berceanu, A.Buta, A.Demian, C.Grama, I.Lazar, I.Mihai, M.Petrascu, V.Simion

Statistical Analysis of Deep Inelastic Interactions in the ⁴⁰Ar(300 MeV) + ¹⁹⁷Au System Including Mass Transfer

NUCLEAR REACTIONS ¹⁹⁷Au(⁴⁰Ar, X), E=300 MeV; calculated fragment kinetic energy vs θ. Statistical analysis.

1986BU05      Rev.Roum.Phys. 31, 29 (1986)

A.Buta, I.Berceanu, I.Brancus, A.Demian, C.Grama, I.Lazar, I.Mihai, M.Petrascu, M.Petrovici, V.Simion

The Energy Dependence of the Multinucleon Transfer Processes for the ¹⁹F + ²⁴Mg System in the Energy Range E = (72.0-87.9) MeV

NUCLEAR REACTIONS, ICPND ²⁴Mg(¹⁹F, X)⁴He/Li/Be/B/C/N/O/Ne, E=72-87.9 MeV; measured σ(fragment θ, E) for fragment Z=6, 7, 8, 9, 5; deduced residual production σ vs Z.

1986PE11      Rev.Roum.Phys. 31, 311 (1986)

M.Petrascu, I.Berceanu, I.Brancus, A.Buta, A.Demian, C.Grama, I.Lazar, I.Mihai, M.Petrovici, V.Simion

Deep Inelastic Interaction in the System ¹⁶O(64MeV) + ²⁴Mg

NUCLEAR REACTIONS ²⁴Mg(¹⁶O, X), E=64 MeV; measured σ(fragment, E) for Z=5, 6, 8, 10; deduced Q, transfer channel odd-even effect. ΔE-E telescope. Sum-rule model.

1985BR04      Z.Phys. A320, 443 (1985)

I.M.Brancus, I.Berceanu, A.Buta, C.Grama, I.Lazar, I.Mihai, M.Petrascu, V.Simion, A.Constantinescu

Classical and Statistical Analysis of ⁴⁰Ar(300 MeV) + ¹⁹⁷Au Deep Inelastic Interaction

NUCLEAR REACTIONS ¹⁹⁷Au(⁴⁰Ar, X), E=300 MeV; calculated σ(fragment θ, E), interaction potential, deflection function. Deep inelastic collision, classical, statistical analyses.

1984PE19      Rev.Roum.Phys. 29, 689 (1984)

M.Petrascu, I.Berceanu, I.Brancus, A.Buta, C.Grama, I.Lazar, I.Mihai, M.Petrovici, V.Simion

Deep Inelastic Collisions in the System ¹⁹F + ²⁴Mg at 72 MeV Incident Energy of ¹⁹F Projectiles

NUCLEAR REACTIONS ²⁴Mg(¹⁹F, X), E=72 MeV; measured σ(fragment θ, Z, E) vs total kinetic energy; deduced reaction mechanism.

1982AB08      Rev.Roum.Phys. 27, 881 (1982)

M.A.Abou-Leila, I.Berceanu, C.Borcea, I.M.Brancus, A.Buta, A.Constantinescu, K.Galawez, C.Grama, S.U.El-Kameesy, I.Lazar, I.Mihai, M.Petrascu, M.Petrovici, V.Simion, G.Voiculescu

A Method for the Absolute Measurement of the Thermal Neutron Flux Based on the (4π(α-⁷Li)-γ) Coincidence Technique

NUCLEAR REACTIONS ¹⁰B(n, α), E=thermal; measured α⁷Li-, αγ-coin; deduced improved accuracy in thermal neutron flux measurements. Ge(Li) spectrometer, 4π pulse ionization chamber.

1982BE58      Rev.Roum.Phys. 27, 463 (1982)

I.Berceanu, I.Brancus, A.Buta, C.Grama, I.Lazar, I.Mihai, M.Petrascu, N.Simion, A.Constantinescu, A.Demian

The Interpretation by Regge Formalism of the Anomalous Large Cross Section at Backward Angles for Elastic Scattering of ¹⁶O on ⁴⁰Ca at E(lab) = 50 MeV

NUCLEAR REACTIONS ⁴⁰Ca(¹⁶O, ¹⁶O), E=50 MeV; calculated σ(θ). Regge formalism.

1981AB07      Fizika(Zagreb) 13, Suppl.No.1, 39 (1981)

M.A.Abou-Leila, I.Brancus, A.Buta, C.Grama, S.U.El-Kameesy, I.Lazar, I.Mihai, M.Petrascu, M.Petrovici, V.Simion

Resonant Behaviour of ²⁴Mg(¹²C, α)³²S Reaction in the Energy Range 21.8-26.0 MeV

NUCLEAR REACTIONS ²⁴Mg(¹²C, α), E=21.8-26 MeV; measured σ(θ=5°, E); deduced channel correlation effect. Elastic scattering data analysis input.

1981VI03      Pisma Zh.Eksp.Teor.Fiz. 33, 233 (1981); JETP Lett.(USSR) 33, 222 (1981)

A.A.Vinogradov, Yu.A.Glukhov, V.I.Dukhanov, I.B.Mazurov, B.G.Novatsky, A.A.Ogloblin, V.V.Paramonov, S.B.Sakuta, D.N.Stepanov, A.G.Trunov, A.A.Tsvetkov, C.Grama, M.Mihai

Observation of a Giant Gamow-Teller Resonance in the Reaction ⁹⁰Zr(⁶Li, ⁶He)⁹⁰Nb

NUCLEAR REACTIONS ¹³C, ⁹⁰Zr(⁶Li, ⁶He), E=93 MeV; measured σ(E(⁶He), θ). ⁹⁰Nb deduced IAS, M1, Gamow-Teller resonances.

1980BR34      Rev.Roum.Phys. 25, 1095 (1980)

I.M.Brancus, A.Buta, C.Grama, I.Lazar, I.Mihai, M.Petrascu, V.Simion, A.Constantinescu, C.Borcea

Analysis by Regge Parametrization of the ¹⁶O Scattering Cross Section on ⁶⁴Ni

NUCLEAR REACTIONS ⁶⁴Ni(¹⁶O, ¹⁶O), E=56 MeV; analyzed σ(θ); deduced strong absorption effects. Regge parametrization.