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NSR database version of April 11, 2024.

Search: Author = D.Cha

Found 28 matches.

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2011YO10      J.Korean Phys.Soc. 59, 1011s (2011)

J.-H.Yoon, D.y.Kim, D.Cha

Systematics of the Yrast Energies in Even-Even Nuclei with a Recent Empirical Formula

COMPILATION A=1-260; compiled yrast energies; deduced simple formula for yrast energies vs N times Z, evaluated yrast energies.

doi: 10.3938/jkps.59.1011
Citations: PlumX Metrics


2010KI01      J.Korean Phys.Soc. 56, 28 (2010)

D.Kim, J.-H.Yoon, D.Cha

Empirical Formula Extended to the Yrast Excitation Energies of the Unnatural Parity States in Even-Even Nuclei

doi: 10.3938/jkps.56.28
Citations: PlumX Metrics


2008JI01      J.Phys.(London) G35, 035105 (2008)

G.Jin, J.-H.Yoon, D.Cha

NpNn dependence of empirical formula for the lowest excitation energy of the 2+ states in even-even nuclei

NUCLEAR STRUCTURE A < 250; calculated excitation energy for the lowest 2+ state in even-even nuclei. Studied nucleon number dependence of the empirical formula. Compared results to data.

doi: 10.1088/0954-3899/35/3/035105
Citations: PlumX Metrics


2008JI09      Nucl.Phys. A812, 58 (2008)

G.Jin, J.-H.Yoon, D.Cha

Empirical formula applied to the lowest excitation energies of the natural parity odd multipole states in even-even nuclei

NUCLEAR STRUCTURE A=1-250; calculated excitation energy for the lowest natural even and odd multipole and dipole states in even-even nuclei. Studied nucleon number dependence of the empirical formula. Compared results to data.

doi: 10.1016/j.nuclphysa.2008.08.014
Citations: PlumX Metrics


2008KI02      Nucl.Phys. A799, 46 (2008)

D.Kim, E.Ha, D.Cha

Universal expression for the lowest excitation energy of natural parity even multipole states

NUCLEAR STRUCTURE A=2-254; compiled, analyzed lowest excited state energies; deduced parameters of empirical formula.

doi: 10.1016/j.nuclphysa.2007.10.006
Citations: PlumX Metrics


2007HA07      J.Korean Phys.Soc. 50, 1172 (2007)

E.Ha, D.Cha

Empirical Formula for the Excitation Energies of the First 2+ and 3- States in Even-Even Nuclei

NUCLEAR STRUCTURE A=2-254; compiled, analyzed excited states energies; deduced parameters.

doi: 10.3938/jkps.50.1172
Citations: PlumX Metrics


2007HA17      Phys.Rev. C 75, 057304 (2007)

E.Ha, D.Cha

Origin of 2+1 excitation energy dependence on valence nucleon numbers

NUCLEAR STRUCTURE Z=52, 70; N=70, 102; calculated the dependence of the first 2+ state excitation energy in even-even nuclei on valence nucleon numbers.

doi: 10.1103/PhysRevC.75.057304
Citations: PlumX Metrics


2006HA07      J.Korean Phys.Soc. 48, 318 (2006)

E.Ha, D.Cha

The Low-Lying Quadrupole Strength of 30Ne and 32Mg Is Revisited

NUCLEAR STRUCTURE 30Ne, 32Mg, 34Si, 36S, 38Ar; calculated level energies, transitions B(E2). BCS plus RPA method, comparison with data.


1992CH22      Phys.Rev. C46, 306 (1992)

D.Cha, G.F.Bertsch

Nuclear Fission with Diffusive Dynamics

NUCLEAR REACTIONS 142Nd(16O, F), E=207 MeV; calculated fission decay rates for Er isotopes, different spin states; deduced fission dynamics. Smoluchowski equation approach.

NUCLEAR STRUCTURE 158Er; calculated decay rate, prescission neutron multiplicity; deduced fission dynamics. Smoluchowski equation approach.

doi: 10.1103/PhysRevC.46.306
Citations: PlumX Metrics


1989CH02      Phys.Rev. C39, 694 (1989)

D.Cha, F.Osterfeld

Theoretical Analysis of 208Pb(p, n) Spectra at 200 MeV

NUCLEAR REACTIONS 208Pb(p, n), E=200 MeV; analyzed forward angle neutron spectra. 208Bi deduced Gamow-Teller transition strength. RPA, DWBA analyses.

doi: 10.1103/PhysRevC.39.694
Citations: PlumX Metrics


1989HO10      Phys.Rev. C39, 2061 (1989)

S.-W.Hong, Y.J.Lee, B.T.Kim, D.Cha

Macroscopic Theory of Heavy-Ion Fusion Reactions

NUCLEAR REACTIONS, ICPND 28Si(28Si, X), 32S(24Mg, X), E(cm) ≈ 30-100 MeV; 40Ca(16O, X), E(cm) ≈ 28-100 MeV; calculated fusion σ(E). Macroscopic model.

doi: 10.1103/PhysRevC.39.2061
Citations: PlumX Metrics


1987KI12      Phys.Rev. C35, 1605 (1987)

B.T.Kim, D.Cha

28Si + 12C Fusion Reactions at High Energies

NUCLEAR REACTIONS, ICPND 28Si(12C, X), 24Mg(16O, X), 20Ne(20Ne, X), E(cm)=15-55 MeV; calculated fusion σ(E). Direct reaction model.

doi: 10.1103/PhysRevC.35.1605
Citations: PlumX Metrics


1987SC04      Phys.Lett. 183B, 243 (1987)

A.Schulte, T.Udagawa, F.Osterfeld, D.Cha

Theoretical Study of the 90Zr(3He, t) and 90Zr(p, n) Reactions at E = 200 MeV per Nucleon

NUCLEAR REACTIONS 90Zr(3He, t), (p, n), E=200 MeV/nucleon; calculated σ(θ), σ(θt, Et), σ(θn, En). 90Nb deduced high L mode excitation mechanism. DWIA, random phase approximation.

doi: 10.1016/0370-2693(87)90956-7
Citations: PlumX Metrics


1987YA10      Phys.Lett. 192B, 26 (1987)

M.Yabe, F.Osterfeld, D.Cha

Theoretical Investigation of the 48Ca(n, p)48K and 48Ca(p, n)48Sc Reactions at E = 200 MeV

NUCLEAR REACTIONS 48Ca(n, p), (p, n), E=200 MeV; calculated σ(θ), σ(Ep, θp), σ(En, θn). 48Sc, 48K deduced Gamow-Teller transition sum rule validity.

doi: 10.1016/0370-2693(87)91135-X
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1986YA09      Phys.Lett. 178B, 5 (1986)

M.Yabe, F.Osterfeld, D.Cha

Microscopic Analysis of 90Zr(p(pol), p'(pol))-Spin-Flip Spectra at E = 319 MeV

NUCLEAR REACTIONS 90Zr(polarized p, p'), E=319 MeV; calculated σ(θ), spin-flip σ(θp, Ep). DWIA.

doi: 10.1016/0370-2693(86)90460-0
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1985MO09      Phys.Rev. C31, 1715 (1985)

H.P.Morsch, D.Cha, J.Wambach

Analysis of Giant Resonances in Proton, 3He, and α Scattering and the Spin-Flip Strength in 208Pb

NUCLEAR STRUCTURE 208Pb, 208Bi; calculated isovector spin-flip response. Microscopic particle-hole model, nuclear matter response.

NUCLEAR REACTIONS 208Pb(α, α'), E=172 MeV; 208Pb(3He, 3He'), E=140 MeV; 208Pb(p, p'), E=200 MeV; analyzed σ(θ). 208Pb deduced isoscalar, isovector spin-flip giant resonance excitations. DWBA, double folding form factors.

doi: 10.1103/PhysRevC.31.1715
Citations: PlumX Metrics


1985OS01      Phys.Rev. C31, 372 (1985)

F.Osterfeld, D.Cha, J.Speth

Microscopic Analysis of Complete 90Zr(p, n) Spectra Including the Δ Isobar Effect

NUCLEAR REACTIONS 90Zr(p, n), E=200 MeV; calculated σ(E, θ); deduced isobar-hole admixture role. 42Sc deduced spin-isospin strength distribution function. Microscopic model.

doi: 10.1103/PhysRevC.31.372
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1985SP04      Phys.Rev. C31, 2310 (1985)

J.Speth, D.Cha, V.Klemt, J.Wambach

Signature to Detect the Isovector Giant Quadrupole Resonance

NUCLEAR STRUCTURE 208Pb; calculated isoscalar, isovector GQR, decay widths, branching ratios.

doi: 10.1103/PhysRevC.31.2310
Citations: PlumX Metrics


1984CH03      Phys.Rev. C29, 636 (1984)

D.Cha, J.Speth

Δ-Isobar Effects on M2 Strength in 208Pb

NUCLEAR STRUCTURE 208Pb; calculated levels, B(M2) strength distribution. RPA, isobar quenching effects.

doi: 10.1103/PhysRevC.29.636
Citations: PlumX Metrics


1984CH19      Phys.Lett. 143B, 297 (1984)

D.Cha, J.Speth

Spin-Isospin Dependent Effective Interaction in Nuclei

NUCLEAR STRUCTURE 48Ca, 90Zr, 208Pb; calculated Gamow-Teller resonances, total transition strength.

doi: 10.1016/0370-2693(84)91469-2
Citations: PlumX Metrics


1984CH27      Nucl.Phys. A430, 321 (1984)

D.Cha, B.Schwesinger, J.Wambach, J.Speth

Isobar-Hole and Two-Particle-Two-Hole Effects in the Spin Response of 90Zr and 208Pb

NUCLEAR STRUCTURE 90Zr, 208Pb; calculated levels, B(M1), Gamow-Teller, M2, isovector, total spin dipole transition strength distributions.

doi: 10.1016/0375-9474(84)90043-5
Citations: PlumX Metrics


1983CH13      Phys.Rev. C27, 2269 (1983)

D.Cha

στ(+) Strength in Nuclei

NUCLEAR STRUCTURE 102,104Cd, 108,110Sn, 116,118Te, 120,122Xe, 126,128Ba, 132,134Ce, 136,138,140Nd; calculated log ft, Gamow-Teller transition strength, charge exchange mode strength function. Zero-range interaction, quasiparticle RPA.

doi: 10.1103/PhysRevC.27.2269
Citations: PlumX Metrics


1983TO14      Phys.Rev. C28, 1398 (1983)

H.Toki, G.F.Bertsch, D.Cha

Implications of the Recently Discovered 208Pb(1+, E(x)=5.845 MeV) State for the Spin-dependent Nuclear Interaction

NUCLEAR STRUCTURE 208Pb; analyzed B(M1) data, 1+ level energy; deduced effective Hamiltomian spin dependence.

doi: 10.1103/PhysRevC.28.1398
Citations: PlumX Metrics


1982AW01      Phys.Rev. C25, 2361 (1982)

T.C.Awes, S.Saini, G.Poggi, C.K.Gelbke, D.Cha, R.Legrain, G.D.Westfall

Light Particle Emission in 16O-Induced Reactions at 140, 215, and 310 MeV

NUCLEAR REACTIONS 27Al, 197Au(16O, p), (16O, d), (16O, t), (16O, α), E=140, 215, 310 MeV; 90Zr(16O, p), (16O, d), (16O, t), (16O, α), E=215, 310 MeV; measured σ(θp, Ep), σ(θd, Ed), σ(θt, Et), σ(θα, Eα); deduced emission mechanism. Moving source analysis, precompound, knockout, coalescence models.

doi: 10.1103/PhysRevC.25.2361
Citations: PlumX Metrics


1981BE38      Phys.Rev. C24, 533 (1981)

G.Bertsch, D.Cha, H.Toki

Systematics of the στ-Strength in Nuclei

NUCLEAR STRUCTURE 48Ca, 90,96Zr, 112,124Sn, 169Tm, 208Pb; calculated Gamow-Teller, L=1 resonances, strength functions. TDA, RPA, zero-range interaction.

doi: 10.1103/PhysRevC.24.533
Citations: PlumX Metrics


1981TO09      Phys.Rev. C24, 1371 (1981)

H.Toki, D.Cha, G.Bertsch

Giant M1 States in Zr Isotopes within the Simple Shell Model

NUCLEAR REACTIONS 90,92,94,96Zr(p, p'), E=200 MeV; calculated σ(θ); deduced M1 quenching factor. Zero-range DWBA, noncentral residual interactions.

NUCLEAR STRUCTURE 90,92,94,96Zr; calculated giant M1 resonances. Shell model, noncentral residual interactions.

doi: 10.1103/PhysRevC.24.1371
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1980CH11      Phys.Rev. C21, 1672 (1980)

D.Cha

Transverse Electromagnetic Form Factor in 12C

NUCLEAR REACTIONS 12C(e, e'), E ≈ 57-250 MeV; calculated transverse form factor; deduced convection current, magnetization density contributions.

doi: 10.1103/PhysRevC.21.1672
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1978KO20      Phys.Lett. 77B, 174 (1978)

C.M.Ko, G.F.Bertsch, D.Cha

Nucleon Tunnelling Model of Mass Diffusion in Deep Inelastic Heavy Ion Collisions

NUCLEAR REACTIONS 108Ag(40Ar, X), E=228 MeV; 197Au(86Kr, X), E=620 MeV; 165Ho, 209Bi(84Kr, X), E=714 MeV; 209Bi(136Xe, X), E=1130 MeV; calculated mass diffusion coefficients.

doi: 10.1016/0370-2693(78)90614-7
Citations: PlumX Metrics


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