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Search: Author = D.P.Singh

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2023YA11      Phys.Rev. C 107, 044605 (2023)

A.Yadav, G.Ram, M.S.Asnain, I.Majeed, M.Shuaib, V.R.Sharma, I.Bala, U.Gupta, S.Gupta, D.P.Singh, P.P.Singh, M.Sharma, R.Kumar, B.P.Singh, R.Prasad

Understanding the low-energy incomplete fusion reactions

NUCLEAR REACTIONS ¹⁵⁹Tb(¹⁸O, 3n), (¹⁸O, 4n), (¹⁸O, 5n), (¹⁸O, 6n), (¹⁸O, 2nα), (¹⁸O, 5nα), (¹⁸O, 6nα), (¹⁸O, 5npα), E=82, 95, 97, 100 MeV; measured Eγ, Iγ; deduced σ(E), contributions of complete and incomplete fusion channels. Comparison to predictions done using the PACE4 code. Systematics of incomplete fusion with different projectiles - ¹²C, ¹³C, ¹⁴N, ¹⁶O, ¹⁸O, ¹⁹F, ²⁰Ne. Activation technique experiment at the Inter-University Accelerator Centre (IUAC, New Delhi).

doi: 10.1103/PhysRevC.107.044605
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2022AS01      Phys.Rev. C 105, 014609 (2022)

M.S.Asnain, M.Shuaib, I.Majeed, M.K.Sharma, V.R.Sharma, A.Yadav, D.P.Singh, P.P.Singh, S.Kumar, R.Kumar, B.P.Singh, R.Prasad

Systematic study of fusion suppression for tightly bound projectiles at above-barrier energies

NUCLEAR REACTIONS ¹⁸¹Ta(¹⁴N, X), E=83.05, 85.17, 87.07 MeV; measured Eγ, Iγ, total complete fusion σ(E) by activation method, and off-line γ-ray spectroscopy at the Pelletron ion-beam facility of IUAC-New Delhi. Comparison with theoretical fusion cross section calculated by using the code CCFULL. ¹⁵⁹Tb, ¹⁶⁹Tm(¹²C, X), (¹³C, X), (¹⁶O, X), (¹⁹F, X), ¹⁷⁵Lu(¹⁹F, X), ¹⁸¹Ta(¹⁴N, X), E(cm)=50-100 MeV; analyzed previous and present experimental data, and compared fusion σ(E) in different systems with strongly bound projectiles using universal fusion function (UFF) method; deduced suppression factors for various projectiles, breakup effects of strongly bound non-α-cluster projectile ¹⁴N on fusion cross section at energies above the Coulomb barrier.

doi: 10.1103/PhysRevC.105.014609
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2022AS02      Phys.Rev. C 106, 064607 (2022)

M.S.Asnain, Mohd.Shuaib, I.Majeed, M.K.Sharma, A.Yadav, D.P.Singh, P.P.Singh, R.Kumar, B.P.Singh, R.Prasad

Decomposing the linear momentum transfer components in break-up fusion reactions: An experimental study of the ¹⁹F + ¹⁵⁹Tb system

NUCLEAR REACTIONS ¹⁵⁹Tb(¹⁹F, X), (¹⁹F, 4n), (¹⁹F, 5n), (¹⁹F, 4np), (¹⁹F, 3nα), (¹⁹F, 4nα), (¹⁹F, 3npα), (¹⁹F, 3n2α), (¹⁹F, 2np2α), (¹⁹F, 4np2α), E=82.8, 94.3 MeV; measured reaction products, Eγ, Iγ; deduced total ranges of the residues in Al, complete fusion σ(E), fusion function, forward recoil range integrated σ(E), contribution of complete fusion and incomplete fusion components to the production of residues. Stack of Al foils was installed after the target to catch the forward recoiled residues, which later were measured with HPGe detector. Comparison with PACE4 calculation, coupled channels calculations performed with CCFULL and other experimental data. Beam from 15UD Pelletron accelerator facility at Inter University Accelerator Center (IUAC, India).

doi: 10.1103/PhysRevC.106.064607
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2022MA13      Nucl.Phys. A1021, 122421 (2022)

I.Majeed Bhat, Mohd.S.M.S.Asnain, V.R.Sharma, A.Yadav, M.K.Sharma, P.P.Singh, D.P.Singh, U.Gupta, R.N.Sahoo, A.Sood, M.Kaushik, R.Kumar, B.P.Singh, R.Prasad

Effect of projectile structure on break-up fusion for ¹⁴N + ¹⁷⁵Lu system at intermediate energies

NUCLEAR REACTIONS ¹⁷⁵Lu(¹⁴N, X)¹⁸⁴Pt/¹⁸⁵Pt/¹⁸⁶Pt/¹⁸³Ir/¹⁸⁴Ir/¹⁸⁵Ir/¹⁸²Os/¹⁸³Os/¹⁸¹Re/¹⁷⁷W/¹⁷⁸Ta, E=87.11 MeV; measured reaction products, Eγ, Iγ; deduced σ. Comparison with PACE4 predictions. The Inter University Accelerator, New Delhi, India.

doi: 10.1016/j.nuclphysa.2022.122421
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6422.

2022MA25      Phys.Rev. C 105, 054607 (2022)

I.Majeed Bhat, M.Shuaib, M.S.Asnain, M.K.Sharma, A.Yadav, V.R.Sharma, P.P.Singh, D.P.Singh, S.Gupta, U.Gupta, R.N.Sahoo, A.Sood, M.Kaushik, S.Kumar, R.Kumar, B.P.Singh, R.Prasad

Role of precursor nuclei in heavy-ion induced reactions at low energies

NUCLEAR REACTIONS ¹⁷⁵Lu(¹⁴N, 4np), E=79.68, 87.11 MeV; ¹⁵⁹Tb(¹²C, 3np), E=69.15, 77.77 MeV; ¹⁵⁹Tb(¹³C, 4np), E=77.87, 84.59 MeV; measured Eγ, Iγ; deduced σ(E). Separated yields of the isotope produced in the direct reaction from feeding caused by decay of the isotopes from other channels. Pelletron accelerator facility of the Inter-University Accelerator Centre(IUAC), New Delhi. comparison to theoretical estimations.

RADIOACTIVITY ¹⁸⁴Pt(β⁺), (EC) [from ¹⁷⁵Lu(¹⁴N, 5n), E=79.68, 87.11 MeV]; ¹⁶⁷Lu(EC) [from ¹⁵⁹Tb(¹³C, 5n), E=77.87, 84.59 MeV; ¹⁵⁹Tb(¹²C, 4n), E=69.15, 77.77 MeV]; measured Eγ, Iγ; deduced T_1/2. Comparison to other experimental data.

doi: 10.1103/PhysRevC.105.054607
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6434. Data from this article have been entered in the XUNDL database. For more information, click here.

2021AS08      Phys.Rev. C 104, 034616 (2021)

M.S.Asnain, M.Shuaib, I.Majeed, M.K.Sharma, V.R.Sharma, A.Yadav, D.P.Singh, P.P.Singh, U.Gupta, R.N.Sahoo, A.Sood, M.Kaushik, S.Kumar, R.Kumar, B.P.Singh, R.Prasad

Effect of non-α-cluster projectile on incomplete-fusion dynamics: Experimental study of the ¹⁴N + ¹⁸¹Ta

NUCLEAR REACTIONS ¹⁸¹Ta(¹⁴N, 3n)¹⁹²Hg, (¹⁴N, 4n)¹⁹¹Hg/^191mHg, (¹⁴N, 5n)¹⁹⁰Hg, (¹⁴N, 6n)¹⁸⁹Hg/^189mHg, (¹⁴N, 3np)¹⁹¹Au, (¹⁴N, 4np)¹⁹⁰Au, (¹⁴N, 5np)¹⁸⁹Au/^189mAu, (¹⁴N, 2nα)¹⁸⁹Pt, (¹⁴N, 4nα)¹⁸⁷Pt, (¹⁴N, 5nα)¹⁸⁶Pt, (¹⁴N, 3npα)¹⁸⁷Ir, (¹⁴N, 4npα)¹⁸⁶Ir/^186mIr, (¹⁴N, 5npα)¹⁸⁵Ir, (¹⁴N, 4n2α)¹⁸³Os, (¹⁴N, 5np2α)¹⁸¹Re, E=65.53, 67.50, 69.47, 71.54, 73.65, 75.65, 77.08, 79.51, 81.42, 83.05, 85.17, 87.07 MeV; measured off-line Eγ, Iγ, σ(E) for radio-nuclides populated via complete fusion (CF) and/or incomplete fusion (ICF processes) by activation method at the ion-beam facility of the IUAC-New Delhi; deduced total fusion, total complete fusion, and total incomplete fusion σ(E). Comparison with statistical model calculations using PACE4 code. ¹⁹⁰Hg; measured nominal half-life from γ-decay curves as an example for the purpose of correct identification of different radioactive nuclei produced through various reaction channels.

doi: 10.1103/PhysRevC.104.034616
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6406.

2021MA50      Nucl.Phys. A1014, 122236 (2021)

I.Majeed Bhat, Mohd.Shuaib, M.S.Asnain, V.R.Sharma, A.Yadav, M.K.Sharma, P.P.Singh, D.P.Singh, R.Kumar, R.P.Singh, S.Muralithar, B.P.Singh, R.Prasad

Systematic study of fusion-fission like events in ¹⁹F + ¹⁷⁵Lu interactions at low energies

NUCLEAR REACTIONS ¹⁷⁵Lu(¹⁹F, X)¹²⁰Xe/⁹⁹Tc/⁷⁹Rb/¹⁰⁷In/¹²⁹Ba/¹⁰⁸In/⁸⁴Rb/⁷⁴Kr/⁹⁰Mo/¹²³Xe/¹²²Xe/¹⁰⁹In/¹²¹Xe/¹²⁹La/¹²¹I/¹¹¹In/⁸¹Rb/⁹⁵Ru/⁸⁹Rb/⁸²Rb/⁹⁸Nb, E=105, 110 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies and relative intensities, σ, isotopic yield and isobaric charge distributions, fractional independent yields, mass distributions.

doi: 10.1016/j.nuclphysa.2021.122236
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6402.

2021OJ01      Phys.Rev. C 104, 034615 (2021)

A.Ojha, S.Gupta, U.Gupta, P.P.Singh, A.Yadav, D.P.Singh, M.Shuaib, B.P.Singh, R.Prasad

Mass-number dependence of statistical model parameters and its impact on incomplete fusion fraction calculations

NUCLEAR REACTIONS ¹⁸¹Ta(¹⁶O, 3n)¹⁹⁴Tl, (¹⁶O, 4n)¹⁹³Tl, (¹⁶O, 5n)¹⁹²Tl, (¹⁶O, 3np)¹⁹³Hg, (¹⁶O, 4np)¹⁹²Hg, (¹⁶O, 5np)¹⁹¹Hg, E=75-105 MeV; ¹⁶⁵Ho(¹²C, 3n)¹⁷⁴Ta, (¹²C, 4n)¹⁷³Ta, (¹²C, 5n)¹⁷²Ta, (¹²C, 3np)¹⁷³Hf, E=55-85 MeV; ¹⁶³Dy(¹⁴N, 3n)¹⁷⁴Ta, (¹⁴N, 4n)¹⁷³Ta, (¹⁴N, 5n)¹⁷²Ta, E=65-85 MeV; ⁷⁴Ge(¹⁶O, 4n)⁸⁶Zr, (¹⁶O, 2np)⁸⁷Y, (¹⁶O, 3np)⁸⁶Y, (¹⁶O, 4np)⁸⁵Y, E=50-110 MeV; calculated σ(E) using statistical model based PACE4 code, with optical model potential (OMP) parameters, summed σ(E) using different sets of OMP parameters and impact on incomplete fusion (ICF) fraction, and effect of deformation parameter β₂ on incomplete fusion. Comparison with experimental data.

doi: 10.1103/PhysRevC.104.034615
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2021SH30      Phys.Rev. C 104, L031601 (2021)

M.Sharma, M.Sarswat, S.Arora, S.Kumar, M.Shuaib, I.Majeed, M.S.Asnain, B.P.Singh, R.Prasad, V.R.Sharma, A.Yadav, P.P.Singh, D.P.Singh

New experimental approach for developing a mass-energy systematics for precompound emission

NUCLEAR REACTIONS ^63,65Cu(α, n), E=5-50 MeV; analyzed experimental σ(E) with theoretical calculations using Monte Carlo statistical code PACE4. ^63,65Cu, ^69,71Ga, ⁸⁵Rb, ⁸⁹Y, ⁹³Nb, ¹⁰³Rh, ^107,109Ag(α, n), E(cm)=22-40 MeV; calculated fraction of pre-compound emission as functions of center-of-mass energy, excitation energy and excess energy; deduced mass-energy systematics in pre-compound emission reactions.

doi: 10.1103/PhysRevC.104.L031601
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2020SH29      Eur.Phys.J. A 56, 247 (2020)

M.K.Sharma, M.Kumar, M.Shuaib, I.Majeed, M.S.Asnain, V.R.Sharma, A.Yadav, P.P.Singh, D.P.Singh, B.P.Singh, R.Prasad

A systematic experimental study of pre-compound emission in α-particle induced reactions on odd mass nuclei A = 103-123

NUCLEAR REACTIONS ¹⁰³Rh, ^107,109Ag, ^113,115In, ^121,123Sb(α, n), E not given; analyzed available data; deduced systematics on the pre-compound emission process using EXFOR library data.

doi: 10.1140/epja/s10050-020-00238-1
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2019SH09      Phys.Rev. C 99, 024617 (2019)

M.Shuaib, V.R.Sharma, A.Yadav, S.Thakur, M.K.Sharma, I.Majeed, M.Kumar, P.P.Singh, D.P.Singh, R.Kumar, R.P.Singh, S.Muralithar, B.P.Singh, R.Prasad

Mass and isotopic yield distributions of fission-like events in the ¹⁹F + ¹⁶⁹Tm system at low energies

NUCLEAR REACTIONS ¹⁶⁹Tm(¹⁹F, X)⁶⁷Ge/⁷⁵Br/⁸⁰Sr/^84mRb/¹⁰¹Mo/¹⁰⁷In/¹⁰⁸In/¹⁰⁹In/^110mIn/¹¹⁵Sb/¹²⁰Xe/¹²⁵Cs/¹²⁶Ba/¹²⁸Xe/¹³⁰Sb/¹³¹Te/¹³⁴Nd/¹³⁵Nd/¹³⁷Nd/¹³⁹Nd/¹⁴⁰Sm/¹⁵⁶Ho, E=92, 102.5, 105.4 MeV; measured Eγ, Iγ, σ(E) by activation method at IUAC, New Delhi; deduced isotopic yield distributions and fractional independent yield for In and Nd isotopes, mass variance and distribution of fission-like events and heavy residues, isobaric charge dispersion parameter and compared with theoretical calculations, and grazing angular momentum. Systematics of isotopic yield distribution variance in ¹⁶⁹Tm(¹⁹F, X), (¹²C, X), ¹⁵⁹Tb, ¹⁶⁹Tm, ¹⁸¹Ta(¹⁶O, X), ²³²Th(⁷Li, X), (¹¹B, X), ²³⁸U(¹¹B, X), (²²Ne, X), ²⁰⁸Pb(²²Ne, X) systems.

doi: 10.1103/PhysRevC.99.024617
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6361.

2019SO21      Acta Phys.Pol. B50, 291 (2019)

A.Sood, P.Kumar, R.N.Sahoo, P.P.Singh, A.Yadav, V.R.Sharma, M.K.Sharma, D.P.Singh, U.Gupta, S.Aydin, R.Kumar, B.P.Singh, R.Prasad

Entrance Channel Effects on Fission Fragment Mass Distribution in ¹²C + ¹⁶⁹Tm System

NUCLEAR REACTIONS ¹⁶⁹Tm(¹²C, X), E= 77.18, 83.22, 89.25 MeV; measured Eγ, Iγ(t); deduced production σ of evaporation residues, isotopic yieldsmass distribution of fission fragments.

doi: 10.5506/aphyspolb.50.291
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6310.

2018SA38      Acta Phys.Pol. B49, 585 (2018)

R.N.Sahoo, M.Kaushik, A.Sood, P.Kumar, V.R.Sharma, A.Yadav, M.Shuaib, D.P.Singh, P.P.Singh, U.Gupta, M.K.Sharma, R.Kumar, B.P.Singh, S.Aydin, H.J.Wollersheim, R.Prasad

Entrance Channel Effect on Incomplete Fusion

NUCLEAR REACTIONS ¹⁶⁹Tm(¹²C, x), E=5-7.5 MeV/nucleon; measured evaporation residues (ER) Eγ, Iγ(time); deduced ¹⁷⁷Re σ_ER; calculated σ_ER using statistical model code PACE-IV with different level density parameter; calculated total (summed over all ERs) σ_T, complete and incomplete fusion σ_CF, σ_ICF. ¹⁰³Rh, ¹¹⁵In, ¹⁵⁹Tb, ¹⁶⁹Tm, ¹⁹⁷Au(¹²C, x), E not given;¹⁰³Rh, ¹⁵⁹Tb, ¹⁶⁹Tm(¹⁶O, x), E not given; measured reaction products Eγ, Iγ; deduced incomplete fusion fraction vs mass asymmetry (relative projectile-target velocity close to 0.05c vs asymmetry).

doi: 10.5506/aphyspolb.49.585
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6326.

2018SH25      Phys.Rev. C 98, 014605 (2018)

M.Shuaib, V.R.Sharma, A.Yadav, M.K.Sharma, P.P.Singh, D.P.Singh, R.Kumar, R.P.Singh, S.Muralithar, B.P.Singh, R.Prasad

Effects of projectile break-up on fusion cross sections at energies near and above the Coulomb barrier: A case of incomplete fusion

NUCLEAR REACTIONS ¹⁷⁵Lu(¹⁹F, 4n), (¹⁹F, 5n), (¹⁹F, 6n), (¹⁹F, 3np), (¹⁹F, 4np), (¹⁹F, 5np), (¹⁹F, nα), (¹⁹F, 2nα), (¹⁹F, 3nα), (¹⁹F, 4nα), (¹⁹F, 2npα), (¹⁹F, 3npα), (¹⁹F, 4npα), (¹⁹F, 3n2α), (¹⁹F, 4n2α), (¹⁹F, 4np2α), E=82-112 MeV; measured Eγ, Iγ, σ(E) of evaporation residues populated via complete fusion (CF) and/or incomplete fusion (ICF) processes using offline γ-activation method at the Inter University Accelerator Centre (IUAC-New Delhi). Comparison with statistical model calculations using PACE4 model.

doi: 10.1103/PhysRevC.98.014605
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6343.

2018SH39      Eur.Phys.J. A 54, 205 (2018)

M.K.Sharma, M.Kumar, M.Shuaib, V.R.Sharma, A.Yadav, Pushpendra P.Singh, D.P.Singh, B.P.Singh, R.Prasad

Analysis of experimental cross-section for (α, n) reactions in odd A and odd Z heavy nuclei: A systematics on pre-compound emission

COMPILATION ¹³⁹La, ¹⁵⁹Tb, ¹⁸¹Ta, ¹⁹⁷Au, ²⁰³Tl(α, n), E=cyclotron; compiled σ; calculated σ, pre-equilibrium fraction using PACE4 (compound nucleus only) and ALICE (includes pre-equilibrium) with varied parameters; deduced parameters influence on the cross sections.

doi: 10.1140/epja/i2018-12634-y
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6329.

2017AL39      Nucl.Phys. A968, 403 (2017)

R.Ali, M.Afzal Ansari, D.Singh, R.Kumar, D.P.Singh, M.K.Sharma, U.Gupta, B.P.Singh, P.D.Shidling, D.Negi, S.Muralithar, R.P.Singh, R.K.Bhowmik

Observed side feeding in incomplete fusion dynamics in ¹⁶O + ¹⁶⁰Gd reaction at energy ∼ 5.6 MeV/A: Spin distribution measurements

NUCLEAR REACTIONS ¹⁶⁰Gd(¹⁶O, x), E≈5.6 MeV/nucleon; measured Eγ, Iγ(θ), Ep, Ip(θ), Eα, Iα(θ), pγ-coin, αγ-coin using GDA (Gamma Detector Array) consisting of 12 n-type Compton suppressed HPGE working together with CPDA (Charged Particle Detector Array); deduced relative spin distributions (relative yields vs spin) of different reaction channels, evaporation residues yrast bands side feeding intensities, mean input angular momentum for different reaction channels.

doi: 10.1016/j.nuclphysa.2017.09.005
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2017SH32      J.Phys.(London) G44, 105108 (2017)

M.Shuaib, V.R.Sharma, A.Yadav, M.K.Sharma, P.P.Singh, D.P.Singh, R.Kumar, R.P.Singh, S.Muralithar, B.P.Singh, R.Prasad

Influence of incomplete fusion on complete fusion at energies above the Coulomb barrier

NUCLEAR REACTIONS ¹⁶⁹Tm(¹⁹F, X)¹⁸⁵Pt/¹⁸⁴Pt/¹⁸³Pt/¹⁸⁴Ir/¹⁸³Ir/¹⁷⁵W/¹⁷⁴W/¹⁷⁶Ta/¹⁷⁵Ta/¹⁷⁹Os/¹⁸¹Os/¹⁸²Os/¹⁸³Os/¹⁷⁴W/¹⁷⁵W/¹⁷⁶W, E<120 MeV; measured reaction products, Eγ, Iγ; deduced σ, ICF strength function. Comparison with statistical model code pace4.

doi: 10.1088/1361-6471/aa84fb
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2017SO12      Phys.Rev. C 96, 014620 (2017)

A.Sood, P.P.Singh, R.N.Sahoo, P.Kumar, A.Yadav, V.R.Sharma, Mohd.Shuaib, M.K.Sharma, D.P.Singh, U.Gupta, R.Kumar, S.Aydin, B.P.Singh, H.J.Wollersheim, R.Prasad

Fission-like events in the ¹²C + ¹⁶⁹Tm system at low excitation energies

NUCLEAR REACTIONS ¹⁶⁹Tm(¹²C, X)^74mBr/⁷⁴Kr/⁷⁵Br/⁷⁵Ge/⁷⁵Kr/⁷⁶Kr/⁷⁷Kr/⁷⁸As/⁷⁹Rb/⁸¹Sr/⁸⁴Br/⁸⁵Zr/⁸⁶Y/⁸⁷Zr/⁸⁹Rb/⁹³Y/⁹⁴Ru/⁹⁵Ru/⁹⁷Nb/^98mNb/¹⁰¹Tc/^102mTc/¹⁰⁴Tc/¹⁰⁴Ag/¹⁰⁵Tc/¹⁰⁵In/¹⁷⁵Re/¹⁷⁶Re/¹⁷⁷Re/¹⁷⁸Re/¹⁷⁷W/¹⁷³Ta/¹⁷⁴Ta/¹⁷⁵Ta/¹⁷⁶Ta/¹⁷¹Lu, E=77.81, 83.22, 89.25 MeV; measured Eγ, Iγ, recoil-catcher activation technique, half-life of ⁷⁴Kr decay, production σ(E) of fission products and evaporation residues, charge and mass distribution of fission fragments at the pelletron accelerator facility of IUAC-New Delhi; deduced fission as one of the competing modes of deexcitation of complete and/or incomplete fusion composites at low excitation energies. Comparison with calculations using PACE code. ¹⁸¹Ta(¹⁶O, X), E*=67.04 MeV; ¹⁵⁹Tb(¹⁶O, X), E*=57.1 MeV; ¹⁶⁹Tm(¹⁶O, X), E*=61.06 MeV; ²³²Th(⁷Li, X), E*=41.7 MeV; ²³²Th(¹¹B, X), E*=55.7 MeV; ²³⁸U(¹¹B, X), E*=67.4 MeV; ²³⁸U(²²Ne, X), E*=64.5 MeV; ²⁰⁸Pb(²⁰Ne, X), E*=46.4 MeV; analyzed previous experimental data for isotopic yield distributions.

doi: 10.1103/PhysRevC.96.014620
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6310.

2017YA25      Phys.Rev. C 96, 044614 (2017)

A.Yadav, P.P.Singh, Mohd.Shuaib, V.R.Sharma, I.Bala, Unnati, S.Gupta, D.P.Singh, M.K.Sharma, R.Kumar, S.Murlithar, R.P.Singh, B.P.Singh, R.Prasad

Systematic study of low-energy incomplete fusion: Role of entrance channel parameters

NUCLEAR REACTIONS ¹⁵⁹Tb(¹³C, 3n), (¹³C, 4n), (¹³C, 5n), (¹³C, 4np), (¹³C, 2nα), (¹³C, 3nα), (¹³C, 5nα), (¹³C, 2n2α), (¹³C, 3n2α), (¹³C, 4n2α), E AP 58, 60, 70, 73, 85, 88 MeV; measured reaction products, Eγ, Iγ, σ(E) at IUAC facility in New Delhi; deduced ICF fraction, and compared with several other systems in the literature. Comparison with theoretical calculations using PACE4 code. ¹⁶⁸Lu; measured half-life of the decay of the g.s. from decay curve of 228-keV γ ray.

doi: 10.1103/PhysRevC.96.044614
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6323.

2016SH04      Nucl.Phys. A946, 182 (2016)

Vijay R.Sharma, Pushpendra P.Singh, M.Shuaib, A.Yadav, I.Bala, Manoj K.Sharma, S.Gupta, D.P.Singh, R.Kumar, S.Muralithar, R.P.Singh, B.P.Singh, R.Prasad, R.K.Bhowmik

Incomplete fusion in ¹⁶O+¹⁵⁹Tb

doi: 10.1016/j.nuclphysa.2015.11.012
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2016SH23      Phys.Rev. C 94, 014613 (2016)

Mohd.Shuaib, V.R.Sharma, A.Yadav, P.P.Singh, M.K.Sharma, D.P.Singh, R.Kumar, R.P.Singh, S.Muralithar, B.P.Singh, R.Prasad

Incomplete fusion studies in the ¹⁹F + ¹⁵⁹Tb system at low energies and its correlation with various systematics

NUCLEAR REACTIONS ¹⁵⁹Tb(¹⁹F, X), E=99.45, 102.6, 105.44, 108.1 MeV from 15UD-pelletron accelerator of IUAC-New Delhi; measured Eγ, Iγ, σ(E) using activation method; deduced evaporation residue σ(E), complete fusion (CF) and incomplete fusion (ICF) σ(E); analyzed experimental excitation functions for the present reaction and data for ¹⁰³Rh, ¹¹⁵In, ¹²⁸Te, ¹⁵⁹Tb, ¹⁶⁵Ho, ¹⁶⁹Tm(¹²C, X), ¹⁵⁹Tb(¹³C, X), ¹⁵⁹Tb, ¹⁶⁹Tm, ¹⁸¹Ta(¹⁶O, X), and ¹⁷⁵Lu(¹⁹F, X) reactions with statistical model code PACE4 to extract incomplete fusion strength function.

doi: 10.1103/PhysRevC.94.014613
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6276.

2016SH36      Phys.Rev. C 94, 044617 (2016)

M.K.Sharma, P.P.Singh, V.R.Sharma, Mohd.Shuaib, D.P.Singh, A.Yadav, Unnati, R.Kumar, B.P.Singh, R.Prasad

Precompound emission in low-energy heavy-ion interactions from recoil range and spin distributions of heavy residues: A new experimental method

NUCLEAR REACTIONS ¹⁶⁹Tm(¹⁶O, 2n)¹⁸³Ir, E=88 MeV; ¹⁵⁹Tb(¹⁶O, 2n)¹⁷³Ta, ¹⁵⁹Tb(¹⁶O, np)¹⁷³Hf, ¹⁵⁹Tb(¹⁶O, 3n)¹⁷²Ta, E=90 MeV; ¹⁸¹Ta(¹⁶O, 2n)¹⁹⁵Tl, E=81, 90, 96 MeV; measured recoil range distributions (RRDs) and spin distributions (SDs) of reaction residues, σ, Eγ, Iγ from the decays of reaction products at IUAC-New Delhi accelerator facility.

doi: 10.1103/PhysRevC.94.044617
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6278.

2015SH01      Phys.Rev. C 91, 014603 (2015)

M.K.Sharma, P.P.Singh, D.P.Singh, A.Yadav, V.R.Sharma, I.Bala, R.Kumar, Unnati, B.P.Singh, R.Prasad

Systematic study of pre-equilibrium emission at low energies in ¹²C- and ¹⁶O-induced reactions

NUCLEAR REACTIONS ¹²⁸Te(¹²C, 3n)¹³⁷Ce, E≈42-80 MeV; ¹⁶⁹Tm(¹²C, 3n)¹⁷⁸Re, E≈55-85 MeV; ¹⁵⁹Tb(¹⁶O, 3n)¹⁷²Ta, E≈68-95 MeV; ¹⁶⁹Tm(¹⁶O, 3n)¹⁸²Ir, E≈70-95 MeV; ¹⁸¹Ta(¹⁶O, 3n)^194gTl/^194mTl, E≈75-100 MeV; measured Eγ, Iγ, σ(E) using activation method; deduced strength of pre-equilibrium (PE) emission. Comparison with theoretical predictions of statistical model code PACE4 and Geometry Dependent Hybrid (GDH)-based code ALICE-91.

doi: 10.1103/PhysRevC.91.014603
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6254.

2015SH04      Phys.Rev. C 91, 024608 (2015)

M.K.Sharma, A.Yadav, V.R.Sharma, D.P.Singh, P.P.Singh, Unnati, I.Bala, R.Kumar, B.P.Singh, R.Prasad

Experimental study of cross sections in the ¹²C+²⁷Al system at ≈ 3-7 MeV / relevant to the incomplete fusion process

NUCLEAR REACTIONS ²⁷Al(¹²C, nα)³⁴Cl, (¹²C, 3p2α)²⁸Mg, (¹²C, n2p3α)²⁴Na, E≈39-85 MeV; measured Eγ, Iγ, σ(E) using γ-activation technique at 15-UD Pelletron accelerator facility of IUAC; comparison with theoretical cross sections from statistical approach and Monte Carlo procedure using PACE4 code; deduced SUMRULE model predictions.

doi: 10.1103/PhysRevC.91.024608
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6255.

2015SH12      J.Phys.(London) G42, 055113 (2015)

V.R.Sharma, A.Yadav, P.P.Singh, I.Bala, D.P.Singh, S.Gupta, M.K.Sharma, R.Kumar, S.Muralithar, R.P.Singh, B.P.Singh, R.K.Bhowmik, R.Prasad

Spin distribution measurements in ¹⁶O+¹⁵⁹Tb system: incomplete fusion reactions

NUCLEAR REACTIONS ¹⁵⁹Tb(¹⁶O, X)¹⁷⁰Hf/¹⁸⁰Os/¹⁷⁶W, E=6.2 MeV/nucleon; measured reaction products, Eα, Iα, Eγ, Iγ; deduced normalized yields, feeding intensities of γ-cascades, spin distributions of various channels.

doi: 10.1088/0954-3899/42/5/055113
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2014SH05      Phys.Rev. C 89, 024608 (2014)

V.R.Sharma, A.Yadav, P.P.Singh, D.P.Singh, S.Gupta, M.K.Sharma, I.Bala, R.Kumar, S.Murlithar, B.P.Singh, R.Prasad

Influence of a one-neutron-excess projectile on low-energy incomplete fusion

NUCLEAR REACTIONS ¹⁶⁹Tm(¹³C, 3n)¹⁷⁹Re, (¹³C, 4n)¹⁷⁸Re, (¹³C, 5n)¹⁷⁷Re, (¹³C, 6n)¹⁷⁶Re, (¹³C, 4np)¹⁷⁷W, (¹³C, 3nα)¹⁷⁵Ta, (¹³C, 4nα)¹⁷⁴Ta, (¹³C, 5nα)¹⁷³Ta, (¹³C, 2n2α)¹⁷²Lu, (¹³C, 3n2α)¹⁷¹Lu, E=59-85 MeV; measured Eγ, Iγ, half-lives of isotopes, σ(E) for different channels by activation technique; deduced fractional σ for incomplete fusion (ICF) and its onset, fusion angular momentum distributions. Comparison with statistical model calculations using PACE4 code.

doi: 10.1103/PhysRevC.89.024608
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6236.

2014SI04      Phys.Rev. C 89, 024612 (2014)

D.P.Singh, V.R.Sharma, A.Yadav, P.P.Singh, Unnati, M.K.Sharma, R.Kumar, B.P.Singh, R.Prasad

Experimental study of incomplete fusion reactions in the ¹⁶O + ¹³⁰Te system below 6 MeV/nucleon

NUCLEAR REACTIONS ¹³⁰Te(¹⁶O, 3n3α)^131mXe, (¹⁶O, n3α)¹³³Xe, (¹⁶O, n3α)/^133mXe, (¹⁶O, 3nα)¹³⁹Ce, (¹⁶O, 5n)¹⁴¹Nd, E=85, 90 MeV; measured Eγ, Iγ, σ(evaporation residues) by activation technique at IUAC-Pelletron facility; deduced fraction of incomplete fusion (ICF). Comparison with theoretical cross-sections using the SUMRULE model, and fusion angular momentum distributions calculated by coupled-channel CCFULL code.

doi: 10.1103/PhysRevC.89.024612
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6238.

2012YA03      Phys.Rev. C 85, 034614 (2012)

A.Yadav, V.R.Sharma, P.P.Singh, D.P.Singh, M.K.Sharma, U.Gupta, R.Kumar, B.P.Singh, R.Prasad, R.K.Bhowmik

Large influence of incomplete fusion in ¹²C + ¹⁵⁹Tb at E_lab ≈ 4-7 MeV/nucleon

NUCLEAR REACTIONS ¹⁵⁹Tb(¹²C, X)¹⁶⁰Ho/^160mHo/¹⁶¹Ho/¹⁶³Tm/¹⁶⁵Tm/¹⁶⁵Lu/¹⁶⁷Yb/¹⁶⁷Lu/¹⁶⁸Lu/^168mLu, E=54-88 MeV; measured Eγ, Iγ, production σ(E) for complete fusion and incomplete fusion; deduced total fusion cross section, percentage fraction of incomplete fusion (ICF), mass asymmetry dependence on ICF fraction. Gamma-activation technique. Comparison with statistical model code PACE4 and previous studies.

doi: 10.1103/PhysRevC.85.034614
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6196.

2012YA07      Phys.Rev. C 85, 064617 (2012)

A.Yadav, V.R.Sharma, P.P.Singh, D.P.Singh, R.Kumar, Unnati, M.K.Sharma, B.P.Singh, R.Prasad, R.K.Bhowmik

Effect of entrance-channel parameters on incomplete fusion reactions

NUCLEAR REACTIONS ¹⁵⁹Tb(¹²C, 3n), (¹²C, 4n), (¹²C, 6n), (¹²C, 3np), (¹²C, 2nα), (¹²C, 4nα), (¹²C, 2n2α), (¹²C, 3n2α), E=74, 80, 87 MeV; measured Eγ, Iγ, yields, forward recoil range distributions (FRRDs), gamma-activation method; deduced integrated cross sections, complete and incomplete fusion components; calculated fusion spin distributions. SUMRULE model. Mass-asymmetry and projectile structure effect. Comparison with calculations using PACE computer code.

doi: 10.1103/PhysRevC.85.064617
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2012YA10      Phys.Rev. C 86, 014603 (2012)

A.Yadav, V.R.Sharma, P.P.Singh, R.Kumar, D.P.Singh, Unnati, M.K.Sharma, B.P.Singh, R.Prasad

Effect of α-Q value on incomplete fusion

NUCLEAR REACTIONS ¹⁵⁹Tb(¹³C, X)¹⁶⁷Lu/¹⁶⁸Lu/¹⁶⁹Lu/¹⁶⁷Yb/¹⁶³Tm/¹⁶⁵Tm/¹⁶⁶Tm/¹⁶⁰Ho/¹⁶¹Ho/¹⁶²Ho, E=58, 60, 70, 73, 85, 88 MeV; measured Eγ, Iγ, σ(E). Analysis using PACE4 statistical model code. Comparison of total complete and incomplete fusion σ for (^12,13C, ¹⁶O)+(¹⁵⁹Tb, ¹⁸¹Ta) systems. Strong dependence of incomplete fusion probability on the Q(α) value of the projectile.

doi: 10.1103/PhysRevC.86.014603
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2011UN01      Phys.Rev. C 84, 014612 (2011)

V.R.Sharma, A.Yadav, P.P.Singh, M.K.Sharma, D.P.Singh, Unnati, R.Kumar, K.S.Golda, B.P.Singh, A.K.Sinha, R.Prasad

Identification of fission-like events in the ¹⁶O + ¹⁸¹Ta system: Mass and isotopic yield distribution

NUCLEAR REACTIONS ¹⁸¹Ta(¹⁶O, X)^71mZn/⁷⁵Ge/⁷⁷Kr/^85mY/, ⁸⁶Y/⁸⁸Kr/^90mY/^91mY/⁹³Y/¹⁰⁵Ru/¹⁰⁵In/¹¹⁰In/^110mIn/^111mIn/^113mIn/¹¹⁷Cd/¹¹⁷Sb/¹²¹Xe/¹²⁹Sb/¹³²La/¹³²Ce/^132mI/¹³⁷Nd/^141mSm/¹⁹²Tl/^192mTl/¹⁹³Tl/^193mTl/¹⁹⁴Tl/^194mTl/¹⁹¹Hg/^191mHg/¹⁹²Hg/¹⁹³Hg/^193mHg/¹⁹⁰Au/¹⁹¹Au/¹⁹²Au/, E=97, 100; measured Eγ, Iγ, recoil-catcher activation method, production σ, isotopic yields, mass distribution of fission fragments. Comparison of isotopic yields with data for ¹⁵⁹Tb+¹⁶O, ¹⁵⁹Tm+¹⁶O, ²⁰⁸Pb+²⁰Ne, ²³²Th+⁷Li, ²³²Th+¹¹B, ²³⁸U+¹¹B, ²³⁸U+²²Ne systems.

doi: 10.1103/PhysRevC.84.014612
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6189.

2011YA17      Int.J.Mod.Phys. E20, 2133 (2011)

A.Yadav, P.P.Singh, V.R.Sharma, U.Gupta, D.P.Singh, M.K.Sharma, B.P.Singh, R.Prasad, R.Kumar, R.P.Singh, S.Muralithar, R.K.Bhowmik

Signature of pre-equilibrium-emission in forward-to-backward yield ratio measurement

NUCLEAR REACTIONS ¹⁶⁹Tm(¹⁶O, X)¹⁸¹Os/¹⁸¹Re/¹⁸²Re/¹⁸³Re/¹⁷⁹W/¹⁸¹W/¹⁸²W/¹⁷⁹Ta/¹⁸⁰Ta, E=5.6 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced normalized yield, yield ratios; deduced preequilibrium emission.

doi: 10.1142/S0218301311020198
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2009GU24      Phys.Rev. C 80, 024613 (2009)

U.Gupta, P.P.Singh, D.P.Singh, M.K.Sharma, A.Yadav, R.Kumar, S.Gupta, H.D.Bhardwaj, B.P.Singh, R.Prasad

Disentangling full and partial linear momentum transfer events in the ¹⁶O+¹⁶⁹Tm system at E_proj ≤ 5.4 MeV/nucleon

NUCLEAR REACTIONS ¹⁶⁹Tm(¹⁶O, X)¹⁷¹Lu/¹⁷²Lu/¹⁷¹Hf/¹⁷⁵Hf/¹⁸¹Re/¹⁸¹Os/¹⁸²Os/¹⁸²Ir, E=76, 81 MeV; measured σ, angular distributions, forward recoil ranges and most probable recoil ranges.

doi: 10.1103/PhysRevC.80.024613
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2009SI34      Phys.Rev. C 80, 064603 (2009)

P.P.Singh, A.Yadav, D.P.Singh, U.Gupta, M.K.Sharma, R.Kumar, D.Singh, R.P.Singh, S.Muralithar, M.A.Ansari, B.P.Singh, R.Prasad, R.K.Bhowmik

Role of high ℓ values in the onset of incomplete fusion

NUCLEAR REACTIONS ¹⁶⁹Tm(¹²C, X)¹⁷¹Lu/¹⁷³Ta/¹⁷⁴Ta/¹⁷⁵Ta/¹⁷⁶W/¹⁷⁶Re/¹⁷⁷Re/¹⁷⁸Re/¹⁸⁰Ir/¹⁸⁰Os/, E=5.6, 6.5 MeV/nucleon; measured α spectra, Eγ, Iγ, γ(particle)-coin; deduced yields, spin distributions, and role of angular momentum on yields in incomplete fusion. Comparison with data for ¹⁶⁹Tm(¹⁶O, X) reaction.

doi: 10.1103/PhysRevC.80.064603
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2008GU13      Nucl.Phys. A811, 77 (2008)

U.Gupta, P.P.Singh, D.P.Singh, M.K.Sharma, A.Yadav, R.Kumar, B.P.Singh, R.Prasad

Observation of large incomplete fusion in ¹⁶O + ¹⁰³Rh system at ≈ 3-5 MeV/nucleon

NUCLEAR REACTIONS ¹⁰³Rh(¹⁶O, X)¹¹⁴Te/¹¹⁵Te/¹¹⁶Te/¹¹⁷Te/¹¹⁵Sb/¹¹⁶Sb/¹¹⁷Sb/¹¹⁰Sn/¹⁰⁸In/¹⁰⁹In/¹¹⁰In/¹¹¹In/¹⁰³Ag/¹⁰⁴Ag/¹⁰⁶Ag, E≈46-85 MeV; measured Eγ, Iγ, σ. Discussed fraction of (in)complete fusion. Comparison with PACE4 calculations. HPGe detector, stacked targets, energy degradation technique.

doi: 10.1016/j.nuclphysa.2008.07.013
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6069.

2008SI02      Phys.Rev. C 77, 014607 (2008)

P.P.Singh, B.P.Singh, M.K.Sharma, Unnati, D.P.Singh, R.Prasad, R.Kumar, K.S.Golda

Influence of incomplete fusion on complete fusion: Observation of a large incomplete fusion fraction at E ≈ 5-7 MeV/nucleon

NUCLEAR REACTIONS ¹⁵⁹Tb(¹⁶O, 3nα), (¹⁶O, 4nα), (¹⁶O, 3npα), (¹⁶O, n2α), E=95 MeV; ¹⁵⁹Tb(¹⁶O, 3npα), (¹⁶O, n2pα), (¹⁶O, n3pα), (¹⁶O, 4nα), (¹⁶O, 2nα), E=95 MeV; measured Eγ, Iγ, production cross sections, excitation functions. ^167,168Lu, ¹⁶⁷Yb, ¹⁷⁷W, ¹⁶⁶Tb, ¹⁷⁸Ta, ¹⁷⁷Hf, ^177,179Re; measured excitation functions in fusion reactions.

doi: 10.1103/PhysRevC.77.014607
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6016.

2008YA21      Phys.Rev. C 78, 044606 (2008)

A.Yadav, P.P.Singh, M.K.Sharma, D.P.Singh, Unnati, B.P.Singh, R.Prasad, M.M.Musthafa

Large pre-equilibrium contribution in α + ^natNi interactions at ≈8-40 MeV

NUCLEAR REACTIONS ⁵⁸Ni(α, p), (α, np); ⁶⁰Ni(α, 2np), (α, n), (α, 2n); ⁶¹Ni(α, 3n), (α, n), E=8-40 MeV; measured σ. Comparisons with predictions of theoretical code ALICE-91.

doi: 10.1103/PhysRevC.78.044606
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6067.

2007SH19      Phys.Rev. C 75, 064608 (2007)

M.K.Sharma, Unnati, D.P.Singh, P.P.Singh, B.P.Singh, H.D.Bhardwaj, R.Prasad

Reaction mechanism in the ¹⁶O+²⁷Al system: Measurements and analysis of excitation functions and angular distributions

NUCLEAR REACTIONS ²⁷Al(¹⁶O, X), E=58-94 MeV; measured Eγ, T_1/2, cross sections and angular distributions for radioactive residues. Compared results to model calculations.

doi: 10.1103/PhysRevC.75.064608
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6052.

2007SI30      Eur.Phys.J. A 34, 29 (2007)

P.P.Singh, M.K.Sharma, Unnati, D.P.Singh, R.Kumar, K.S.Golda, B.P.Singh, R.Prasad

Observation of complete- and incomplete-fusion components in ¹⁵⁹Tb, ¹⁶⁹Tm(¹⁶O, x) reactions: Measurement and analysis of forward recoil ranges at E/A ∼ 5-6 MeV

NUCLEAR REACTIONS ¹⁵⁹Tb(¹⁶O, X)¹⁶⁶Tm/¹⁶⁷Yb/¹⁶⁷Lu/^168mLu, E≈90 MeV; ¹⁶⁹Tm(¹⁶O, X)¹⁷⁷Hf/¹⁷⁸Ta/¹⁷⁷W/¹⁷⁷Re/¹⁷⁹Re, E≈87 MeV; measured Eγ, Iγ; deduced (in-)complete fusion evaporation residue yields, σ, T_1/2, recoil range distributions.

doi: 10.1140/epja/i2007-10487-1
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6086.