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NSR database version of April 27, 2024.

Search: Author = A.C.Visakh

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2023SH11      Phys.Rev. C 107, 054619 (2023)

M.Shareef, E.Prasad, A.Jhingan, N.Saneesh, S.Pal, A.M.Vinodkumar, K.S.Golda, M.Kumar, A.Shamlath, P.V.Laveen, A.C.Visakh, M.M.Hosamani, S.K.Duggi, P.S.Devi, G.N.Jyothi, A.Tejaswi, A.Chatterjee, P.Sugathan

Neutron multiplicity measurement and investigation of nuclear dissipation and shell effects in ³⁰Si + ^{182, 184, 186}W reactions

NUCLEAR REACTIONS ¹⁸²W(³⁰Si, X)²¹²Ra, ¹⁸⁴W(³⁰Si, X)²¹⁴Ra, ¹⁸⁶W(³⁰Si, X)²¹⁶Ra, E=138.8-191.9 MeV; measured reaction products, fission fragments, neutron time-of-flight, En, In, angular distribution, (fragment)n-coin; deduced neutron multiplicity spectra, prescission (from compound nucleus) and postscission (from fission fragments) contributions to neutron multiplicity, neutron angular distribution. Comparison to statistical model calculations performed with code VECSTAT incorporating dynamical hindrance in nuclear fission due to dissipation, shell corrections in the fission barrier and level density, and collective enhancement of level density (CELD). National Array of Neutron Detectors (NAND) consisting of 50 organic liquid scintillator detectors (BC 501A) coupled to the pair of position-sensitive multiwire proportional counters (MWPCs) at 15 UD Pelletron+Superconducting Linear Accelerator facility of the Inter-University Accelerator Centre (IUAC, New Delhi).

doi: 10.1103/PhysRevC.107.054619
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2022JI08      Phys.Rev. C 105, 054614 (2022)

P.Jisha, A.M.Vinodkumar, S.Sanila, K.Arjun, B.R.S.Babu, J.Gehlot, S.Nath, N.Madhavan, R.Biswas, A.Parihari, A.Vinayak, A.Mahato, E.Prasad, A.C.Visakh

Role of positive transfer Q values in fusion cross sections for ¹⁸O + ^{182, 184, 186}W reactions

NUCLEAR REACTIONS ^182,184,186W(¹⁸O, X), E=68-104 MeV; measured reaction products, evaporation residues, beam-like particles; deduced evaporation residues σ(E) , fusion σ(E). Comparison to coupled channels calculations (CCFULL code) with inclusion of different inelastic channels. Systematics of fusion σ(E) in reactions induced by ¹⁶O and ¹⁸O. Heavy Ion Reaction Analyser (HIRA) at the 15 UD Pelletron accelerator facility of the Inter-University Accelerator Centre (IUAC), New Delhi

doi: 10.1103/PhysRevC.105.054614
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6432.

2021VI08      Phys.Rev. C 104, 054602 (2021)

A.C.Visakh, E.Prasad, P.V.Laveen, M.Shareef, A.Shamlath, S.Nath, N.Madhavan, J.Gehlot, Gonika, R.Biswas, A.Parihari, J.Khuyagbaatar, B.Lommel, B.Kindler, A.M.Vinodkumar, B.R.S.Babu, S.Sanila, K.M.Varier, S.Appannababu

Fusion studies in ¹⁶O + ^{142, 150}Nd reactions at energies near the Coulomb barrier

NUCLEAR REACTIONS ¹⁴²Nd(¹⁶O, X), E=60-104 MeV; ¹⁵⁰Nd(¹⁶O, X), E=56-104 MeV from the 15-UD Pelletron accelerator at IUAC-New Delhi; measured reaction products using the Heavy Ion Reaction Analyzer (HIRA), with electromagnetic configuration of Q1Q2-ED1-M-MD-ED2-Q3Q4 and two silicon surface barrier detectors (SSBDs), evaporation residues (ERs) using position sensitive multiwire proportional counter (MWPC), two-dimensional ΔE versus ToF spectra, σ(E) for ERs; deduced fusion σ(E). ¹⁴⁸Nd(¹⁸O, X), ^142,144,148Nd(¹⁶O, X), E-V_B=-10-35 MeV analyzed previous and present experimental measurements for reduced fusion σ(E). Comparison with coupled channels calculations using CCFULL code, and with 1D-BPM predictions using Akyuz-Winther (AW) potential parameters.

doi: 10.1103/PhysRevC.104.054602
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6412.

2019SH10      Phys.Rev. C 99, 024618 (2019)

M.Shareef, E.Prasad, A.Jhingan, N.Saneesh, K.S.Golda, A.M.Vinodkumar, M.Kumar, A.Shamlath, P.V.Laveen, A.C.Visakh, M.M.Hosamani, S.K.Duggi, P.Sandya Devi, G.N.Jyothi, A.Tejaswi, P.N.Patil, J.Sadhukhan, P.Sugathan, A.Chatterjee, S.Pal

Nuclear dissipation at high excitation energy and angular momenta in reaction forming ²²⁷Np

NUCLEAR REACTIONS ¹⁹⁷Au(³⁰Si, X)²²⁷Np^*, E=152.3, 159.4, 166.4, 173.4, 179.4, 186.4, 192.4 MeV or E^*=44-79 MeV; measured reaction products, time correlation spectra of complementary fragments, E(n), I(n), double differential neutron multiplicity spectra, neutron angular distributions, fragment and neutron time of flight using the National Array of Neutron Detector (NAND) array for neutron detection and two multiwire proportional counters for fragment detection at the 15 UD Pelletron accelerator facility of IUAC-New Delhi; deduced neutron multiplicity, pre-, post-and total scission neutron multiplicity and temperature, and total neutron multiplicity. Comparison with statistical model calculations.

doi: 10.1103/PhysRevC.99.024618
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2018PA42      Phys.Rev. C 98, 031601 (2018)

A.Pal, S.Santra, D.Chattopadhyay, A.Kundu, A.Jhingan, P.Sugathan, N.Saneesh, M.Kumar, N.L.Singh, A.Yadav, C.Yadav, R.Dubey, K.Kapoor, K.Rani, H.Arora, A.C.Visakh, D.Kaur, B.K.Nayak, A.Saxena, S.Kailas, K.-H.Schmidt

Mass distributions of fission fragments from nuclei populated by multinucleon transfer or incomplete fusion channels in ^{6, 7}Li + ²³⁸U reactions

NUCLEAR REACTIONS ²³⁸U(⁶Li, F), (⁶Li, αF), (⁶Li, tF), (⁶Li, dF), (⁶Li, pF), (⁷Li, F), (⁷Li, αF), (⁷Li, tF), (⁷Li, dF), (⁷Li, pF)²⁴¹Pu/²⁴²Pu/²⁴³Pu/²⁴⁴Pu/²⁴⁰Np/²⁴¹Np, E=30, 34, 40, 31.4, 41.4 MeV; measured mass and folding angle distributions for inclusive fission and fission fragments in coincidence with α, t, d, and p at IUAC-New Delhi Pelletron accelerator facility; deduced peak/valley ratio for inclusive and breakup/transfer-fission. Comparison with previous experimental data, and with predictions of GEF code. Discussed shell correction parameter for symmetric fragments.

doi: 10.1103/PhysRevC.98.031601
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6345.