PROCEEDINGS OF THENUCLEAR PHYSICS AND SOLID STATE PHYSICS SYMPOSIUM

FUNE, DECEMBER 26-30, 1977

VOLUME 20B

NUCLEAR PHYSICS

UNIVEPSI rAT8B.B

CONTENTS

I. NUCLEAR STRUCTURE

An

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Level Structure of Odd - A Cu Isotopes in theParticle - Phonon Coupling Model : RupayanBhattacharya K. Krishan and R. K. Guchait 34

188Angular Momentum Projected Spectrum of HG :

S. B. Khadkikar and C. R. Praharaj 35

The Lipkin Mode.1 and Bloch States : Ajoy Choudhuri,Binayak Dutta-Roy and Mira Dey 36

SU(6) S> SU(4) Tensor Decomposition of Interactions inS-D Shell and Calculation of SU(4) Mixing Ratios :M. Chakraborty, V. K. B. Kota and J. C. Parikh 37

Eigenvalue Density and Spacing Distributions forEnsembles of Two Body Hamiltonians : V. Fotbhare

and V.K. B. Kota 40

Eigenvalue-Density for Ensemble of K-Body RandomHamiltonians : V. Fotbhare and V. K. B. Kota 44

Iaospin Structure of Giant States of O : R. S. Bhaleraoand A.K. Singh 45

Enhanced Isospin Dependence of the Particle-Hole

Effective Interaction ; D. P. Ahalpara and K. H. Bhatt 47

Effect of the Finite Neutron Charge on the ChargeStructure of Light Nuclei : R. S. Kaushal 48

Description of Oriented and Non-Oriented Nuclei withHigher Spin : G. Ramachandran and M. V. N. Murthy 50

Neutron Separation Energies in Odd-Odd Nuclei beyond2p-lf Shell : A.K. Verma, S. D. Sharma and V. P. Garg 53

Pairing Energies in Odd-Odd Nuclei : S, D, Sharma,V. P. Garg and A. K. Verma 54

Collective Bands of Hole States in f?/2 Nuclei :D. P. Ahalpara 55

Oblate and Prolate Asymptotic Quantum Numbers ofNilsson States : G. Shanmugam, P. R. Subramanian,M, Rajaaekaran and V, Devanathan 58

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A W^fc-Coupling Modal for ths Spectroscopy of

He»v^ Nuclei : Aahwaai Knrn&r and R. K. Banaal 60

Sum Bales for Ml Tr&nsltiop Stre&gths from. Isobaric

Analog States : S, Shelly 62

S2 Transition Probabilities in Low Mast Even-Even

Nuclei : A. Auguslhy, H. M. Agrawal and M. L, Sehgal 65

Description of the Highly Perturbed Rotational Band

Levels in Odd-Proton Odd-Mass Rare Earth Nuclei : 67

P. C. Joahi

A Microscopic Triaxial Description of Oa and Pt Nuclei

R. Sahu, M. Satapathy, .A* -AnaM* wd L. Satapathy 68

Kinking and Odd-Even Shift In Deformed Odd-A and Odd-

Odd Nuclei : V. P. Garg, S.D. Sharma and A. K. Verma 72

A Two-Centre Model for Deformed Nuclei : S, D. Sharma

and S. S. Chandel"

74

The Pairing Attenuation Model Applied to the Evan Even

Nucle In Actinide Range : A, K. Jain 77

On th* High-Spin YRAST Cascade in 6°Ni : V. Potbhare,S, K. Sharma and S. P. Pandya

78

Collective States In 180 : Nandita Rudra 79

Physically Acceptable Eigenvalues in UPE for Hard

Core Potentials : C. Maheswarl80

On the Validity of the Unitary Pole Approximation at

Positive Energies for Hard-Core Exponential Potentials :

Reeta Vyas and V. S. Mathur82

A Possible Separable Form for Half Shell Functions

Constructed Entirely from Phase Shifts and Bound State :

C. Maheshwari and A. V. Lagu • 85

Off-Energy-Shell Jost Function-for Nonlocal Potentials :

R. N. Chaudhurl and B. Talukdar86

Solutions of the Van-Leeuwen • Reiner Equation for

Nonlocal Potential : B. Talukdar, U. Das and

S. VfuWMMw4h9M«%»7

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II. NUCLEAR REACTIONS

Scattering of High-Energy Protons on Lt :

I. Ahmad and Z. A. Khan 89

Scrutiny of the Impulse Approximation for (p, 2p)Reactions B.K. Jain 93

Higher Order Eikonal Approximation in ScatteringT-Matrix : S. Sarkar and Sofia Khatun 94

Effect of Non-Eikonal Propagation in Glauber Formulain Scattering of 1 GEV Protons by Deuterons : S. Debiand S, K. Sharma 97

Corrections to Glauber Multiple Scattering Series dueto Non-Eikonal Propagation : S. K. Sharma and S, Debi 98

The Spectrum of Virtual Quanta Emitted from anElectron Scattering in a Nuclear Coulomb Field :K, K. Sud and A. R. Sud 99

Angular Distribution and Circular Polarization of

-Rays Emitted from Electroexcited Deformed

Nuclei : S. Sarkar and Sofia Khatun 100

Inelastic Fhotoproduction of Positive Pions from O ;K, Venkatesh and G. Ramachandran 101

A Study of C(p,TT")140 Reaction at 185 MeV ;A. Choudhury and J. Mahaianabis 104

High Resolution Pion-Proton Elastic ScatteringDifferential Cross-Section near the ETA Meson

Threshold : H. Nandakumar Sarma D, M. Binnie, J. Carr,W. G. Jones and D. A. Garbutt 107

Off Shell Effects in (***«•*£ ) Reactions on 12C :S. C. Phatak and B.K. Jain 111

Scattering of Pions by Deuterons : V. Girtja andV. Devanathaa 114

Hon Scattering on Nuclei : R. S. Keshavamurthy andG. Ramachandran 117

A Theoretical Sandy of tf* Total Crosa-Sectlona ofSome Light Nuclat Bear the 3-3 Resonance EnergyRa$£on : Jayaatt Mahalaaabia 118

Am Impulse Model Calcaiatton of w" -He Elastic

Scattering Around (3-3) Resonance : J. Mahalaaabiaand A. ChjMwdaaey 119

Positive Hon Absorption by Carbea-12 :

N. Ch&ndraoakaar and T. &. Wagnmare 120

Microscopic Calculation, of D— Scattering -with

4-Body AnieniEUBaetrlaad Wavofanctisa: Kiran Kumar 121and A. K. Jain

Bml Part of IeavCon Interaction Potential, usingEnergy Doaetty Formalism : B. Boaera, K. C. Panda

and R. K. Satpatay 124

Microscopic Calculation «f Nucleuo-Wucleus Complex

Optical Fotaettala : S.K. Gupta and S. Kallaa 127

The Imaginary Part of Hoeleua-Nucleua Potes&l&l i

S. C. Phasak and B. C. alalia 130

A Study of the Transfer Amplitude In Heavy Ion

Reaction : H. Haaan 131

Application of Thomas-Fermi Gas Model to Strongly

Damped Collisions of Heavy Ions : A. K. Jain and

N. Sarma 135

MSemi-Classical Treatment of the Collision of Kr

•with U236 : M. Rajaaekaran 136

Nuclear Friction and the Imaginary Past of the Nacleos-

Nucleus Interaction Potential : Bikaoh &aha 137

Pre-Compound Decay in' (a, 2n) Reaction* at 14. 2 MeV :

N. Lakahmana Daa, C. V. Srinivaaa Rao,B. V. Thlrumala Rao and J. Rama Rao 138

Calculation of (n. 2a) Croae Section*Aroaad 14. 5 MeV

Ualng an Integrated PreovilUbrlena-eani-ateMettcalModel : Amhar Chatterjeo and Sanson* K. flopan 139

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(n, 2n) and (n, 3n) Cross-Sections on the Basis ofStatisHcaUModel for Heavy-Nuclei : M. L. Jhingan,R. P. Anand;S. K. Gupta and M.K. Mehta 141

Analysis of Neutron Elastic and Inelastic Scatteringfrom 186W, 238u and ^^Ce : A. B. KulkarnI andN. Nath 142

Calculated Energy and Angular Distributions of Ni(n, p) Reaction at 14 MeV : R. K. Mohindra and NirmalSingh 146

Direct and Collective Nucleon Capture Using MicroscopicOptical Potential : D. R. Chakrabarty and S. K. Gupta 147

Statistical Analysis of.Neutron-Reduced Widths :H. M. Agrawal and M. L. Sehgal 150

Energies and Lifetimes of the Levels iii Si28 :V.K. Mittal, D.K. Avasthi and I. M. Govil 151

Fluctuation Analysis of Ca48(p, n) Sc Total ExcitationFunction from 1. 900-5. 100 MeV : Gulzar Singh,S. Kailas, A. Chatterjee, S. Saini, M. Balakrishnan andM.K. Mehta 155

44'Resonance Spectroscopy of the Nucleus Ti :A. Chatterjee, S, Saini, S. Kailas, N. Anantharaman,M. Balakrishnan and M. K. Mehta 156

Compound Nucleus Contributions in the Differential and

Double Differential Cross Sections for 24Mg(d, p )25Mg :S. R, Verma and Rajendra Prasad 159

R-Matrix Approach tp the Analysis of Neutron

Scattering from 6Ll : M. C. Gupta and C. S. Shastry 160

III. NUCLEAR SPECTROSCOPY

Differential Correlation Studies on 3"(2529 keV P>~ )2+(1465 keV r)0+ Cascade in 72Ga and 0"(1766 KeV/»")2+(81 keV r )0+ Cascade in 166Ho Decays : M. Srinivasa Rao,D.K. Priyadarslnt, S. Lakshminarayana, V. SeshagiriRao and D. L. Sastry 161

(5/2: -» 5/2+) 803 keV Beta Transition in Nd-147 :S. Lakshminarayana, M. Srinivasa Rao, V. Seshagiri Raoand D-. L. Sastry 165

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134Coincidence Studies in the Decay of Cs :

Lakshman Chaturvedi 168

Energy Intensity and Angular Correlation Measurementsfor Various Transitions in the Decay of Ag-llOM :

H.R. Verma, A. K. Sharma, Ravinder Kaur,K. K. Suri and P. N. Trehan 169

Determination of the Transition Probabilist of the

7+-»2" E5 T

C. Gunther

7+-» 2" E5 Transition in 90Y : G. N. Rao and171

Empirical Relation for Total Stopping Power ofPositrons and Electrons in Metals and Liquids :

S. K. Gupta and D. K. Gupta *T2

Angular Correlation Studies In the Decay of Co :

A. K. Sharma, H, R. Verma, Ravinder Kaur,

K. K. Suri and P. N. Trehan 174

Level Structures in Te-124 : A. K. Sharma,

Ravinder Kaur, H. R. Verma, K.K. Suri and. _ _P.N. Trehan 177

Electromagnetic Properties of 1181 keV State in

123Sb : P.N. Patrawale.and R. G. KulkarnI 178

Gamma-Gamma Angular Correlation of 1355-603 keVCascade in 124Te : D. P. Navalkele, K. Andhradeo andR. G. KuBtarni - 181

Coulomb Excitation of 2. 73 MeV Level in Al :

V. N. Kulkarni, P. N. Patrawale, V. U. Pattl and

R. G. Kulkarni 182

In-Beam f -Ray Studies of 80Kr : D, L. Sastry,A. Ahmed, A. V. Ramayya, R. B. Rercey,

H. Kawakami, J. H. Hamilton, C. F. Maguire,A. P. De Lima, R. L. Robinson, H.J. Kim,and

J. C. Wella 183

Level Scheme of 8lKr : Y.K. Agarwal, C. V.K. Baba,S.M. Bharathl, V. M. Datar, H. C. Jain and B. Lai 186

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Em&

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in it,yI i Ayub Thuker and M.N. Raina 191

Absoluts:Iaternal Convers Ion Co»£®e|«& Maaamemmastttaof Some Transitions la the D«cay «f 22^Ac - Z28Ta ;M. S. Bldarkundl and A. S. Mahajan 192

Internal and External Bremestrafelujag %®etra in LoadEsclted by 32P : Salim Ahmad, M. S. Powar aadM. Singh 195

Hyper fine Interaction of Ta. In Gadolinium And Hi in

Iron and Nickel by PAC Technique : A. Kumar,N. Aggarwal, S. Bedi, B. Singh, and If. S. Hans 198

K-Electron Capture to Positron Emission Ratios for

Allowed Transitions and Second Class Current :

M. A. Ansari and M. L. Sehgal 201

Study of Light Mass Indium and Cadmium Isotopes withthis Li sol (Leuvea Isotope Separator ©a*Lin®) :R, Couasement, J. De Raedt, G. Dumount, M. Huyse,G. Lhersonneau, S. Pacholsky, H. Pattys, D. L. Sastry,J, Van Klinken and J. Verpiancke 205

Gamma Ray Transition Probabilities in E2 Transitions :

S.K. Bhardwaj and D.K. Gupta 209

Conversion Coefficients and Multlpolarities of

Transitions In '5As : Rajendra Prasad 211

Experimental Study of Internal Bremsstrahlung

Accomplanying Beta Decay of Y-90 Using Magnetic

Deflectloh Technique : P. Venkataramalah' and

B. Sanjeevaiah 212

IV. NUCLEAR FISSION

Tkeory of Fission Yields and of Production of Super-Heavy Elements : Raj K. Gupta 215

Classical Microscopic Description of Low Energy Heavy-Ion Collisions s V. S. Ramamurthy and S. K. Kataria 220

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Effect of Friction on Fragment Motion near Scission

Point and FisBion Fragment Kinetic Energies :

M, Prakash, V. S. Ramamurthy, S. K. Kataria and

S. S. Kapoor 223

Transmission Through Biharmonic Oscillator

Potentials: Application to Double-Humped Fission

Barrier : M. Prakash 227

234Quantitative Resolution of Th-Anomaly :

M. Prakash and B. S. Bhandari 229

An Anomaly in the Fission-Character of &-Decayand Its CC -Decay Without Tunneling' Explanation :

M.K. Basu 230

Comparison of the Characteristics of Thermal

Neutron Induced and Spontaneous Fission :

Harashtt Majumdar and Aparesh Chatterjee 231

Relative Yields of Fragment Pairs in Spontaneousand Slow Neutron Induced Fission in Terms of

Double Core Model : M. L. Chatterjee andK. Krishan 235

Emission of Individual Light Charged Particles

(Z=l, 2) in 120-500KeV Neutron Induced Fission of235U:D. M. Nadkarnl, R.K. Choudhury, S. S. Kapoor,B. Krishnarajulu and G, K. Mehta 236

Yield and Energy Spectra of LCP in Low-EnergyNeutron Induced Fission of 239pu . B. Krishnarajulu,

S. Sen and G. K. Mehta 240

TFSD Response to Fragments from Light Charged

Particle Accompanied Fission of 23°U :

N. N. Ajitanand, K. N. Iyengar and S. R. S. Murthy 241

Multiparameter Studies of Mass, Energy Correlations

in Ternary Fission of 235U Induced by Thermal

Neutrons : R.K. Choudhury, D. M. Nadkarnl,P. N. Rama Rao and S. S. Kapoor 245

Multiplicity Distribution of Prompt Gamma Rays la

Spontaneous Ternary Fission of ***Cf :

R. K. Choudhury, V. S. Ramamurthy and

J. C. Mohaaakrlshaa 248.

Nuclear Charge Distribution in Fission : Determi¬

nation of Fractional Cumulative Yields of 99^0,112Pd, 132Te in the Spontaneous Fission of252Cf and of 99Mo and 135I in Thermal NeutronInduced Fission of Z45Cm : Sarbjit Singh, Tarun

Datta, R. Trehan, P.P. Venkatesan, S. P. Dange,

S. B, Manohar, A. G. C. Nair, Satya Prakash and

M. V. Ramaniah 249

Low Yield Short-Lived Products in the VeryAsymmetric Fission of Uranium : Additional

Evidence for the Influence of the 28 Proton Shell

in Fission Mass Distribution : V.K. Bhargava,

V. K. Rao, S, G. Marathe, S. M. Sahakundu and

R.H. Iyer 252

Fine Structure in Mass Distribution of Low Energy

Fission of U to Cf Isotopes : M.N. Rao. 253

V. NUCLEAR FORCES AND NUCLEAR MATTER

Equation of State for Interacting Neutron Fluid at

High Temperatures : B. Banerjee, S. M. Chltre and

I. Ramarao 255

Nuclear Matter Teat for a Non-Local Separable N-N

Interaction : M, L. Sharma and Lai Singh 256

Nuclear Matter Calculation with and Without Isobars,

by the Matrix Inversion Method and Comparison of

Nuclear Matter G-Matrix with the Free Scattering

Matrix : J. Dey and B. C. Samanta 260

Nuclear Matter Calculations Using Various Nonlocal

lso F-F Potentials : S. Bhattacharyya and M. K. Roy 263

Single Particle Potential, its Isotopic Spin

Dependence and Symmetry Coefficient in NuclearMatter : B. Behera and R. K. Satpathy 264

Tabakin Interaction Matrix-Elements in 2p-lf Region :

Y.K. Gambhir 265

Nucleaa Structure Calculations Using Momentum-

Dependent Delta Interaction (MDD) : Blkash Slnha

and Steven A. Moszkowski 266

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Coir.binttii Variable-Phase-Off-Shell ScatteringTheory : B. Talukdar, N. Mallick and U. Das 267

Three Body Correlations in Liquid He :

R..K. Tripathl andl. Ramarao 270

VI, EXPERIMENTAL TECHNIQUES

Control Setting Calculations and Experimental Results

on the VEC : A. Jain and A. S. Divatia 271

Beam Quality and Operational Characteristics of

Chandigarh Variable Energy Cyclotron :

I. M. Govil, Gulzar Singh and H. S. Hans 274

Ion Optics for Accelerating Tubes of 2MV Tandem

Accelerator: P. Singh, A. K. Jain, T. P. David and

M. G. Betigerl 276

Voltage Tests on Tandem Accelerator at B. A, R. C. :

T. P. David, M. G. Betigeri, P. Singh, J. N. Soni and

M.K. Mehta 277

Beam Steering Magnet : K. B. Nambiar- 281

Measurement of Threshold Energies of MultiplyCharged Gold Ions by Successive Electron Impacts :

A. V. Korgaonkar, C. P. Gopalaraman and

V.K. Rohatgi 284

Proton Induced X-Ray Studies of Biological Samples :

S. SenandG.K. Mehta 287

Design of Plastic Scintillator Detectors for Optimum

Luminescence Yield : S. Nath, B. Pal andA. Chatterjee 289

International Intercomparlson of Absolute Gamma

Emission Rates from Europium-152 with Ge(Li)

Detector : P. K. Srivastava, S. Kamboj and G. D.Khera 290

A New Approach to Absolute Fission Yield Measurements :

A. Ramaswami, B. K. Srivastava, V. Natarajan,R. Sampathkumar, N. K. Chaudhurl and R. H. Iyer 291

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Development of an Exposure Unit for Cf2J>2

Flpalon Fragments under Conditions of Controlled

Temperature and Pressure i J. S. Yadav, V. P. Singhand A, P. Sharma

Determination of Critical Stopping-Power

(dE/dX)c for Different Solid Dielectric TrackDetectors (SDTDs) : Kamal Kant Dwivedl and

Shankar Mukherji

Mass and Energy Resolution of C.3

Fission

Fragments in Glasses ; J. S. Yadav, V. P. Singh

and A. P. Sharma

A Method of Alternate Recording of On & Off

Resonance Yields at a Fast Rate to Smooth Out the

Background : D. R„ Chakrabarty, N. L. Ragoowansi,

H. H. Oza and M. A. Eswaran

Studies On Ion-Implanted Semiconductor Detectors :

R. V. Srikantiah, H. J. Shetty,'

H, M. Aniagyei,

P. K. Bhattacharya and S. Gaonkar

Design and Construction of Drift Chambers for the

Accurate Position Measurement ; H. Nandakumar

Sarma, D. M. Binnie, J. Carr, W. G. Jones,

I. Slotis and N. C. Debenham

AUTHOR INDEX