PROCEEDINGS OF THE

NUCLEAR PHYSICS AND SOLID STATE PHYSICS SYMPOSIUM

MADRAS, DECEMBER Z6 - 30, 1979 *

VOLUME 22 B

NUCLEAR PHYSICS

ORGANISED BY THE

DEPARTMENT OF ATOMIC ENERGY

GOVERNMENT OF INDIA

CONTENTS

Page

NUCLEAR STRUCTURE

Spectra o£ 12B and I8C : S. B. Khadkikar

and V. B. Kamble. 1

The Charge Form Factor and QuadrnpoleMoment for Lithium-6 and 7 :

K. Srinjvaaa Rao. S. SusLla and R. Sridhar. 4

On the Sub-Shell Occupancies oE the p-Shell

Orbits in.the Ground States of Doubly-Even

Isotopes of Tl, Cr, Fe, Ni and Zn in the

Framework of Projected Hartree-Fock-Bogo-

liubov Theory : P. N. Tripathi and

S.K. Sharma. 8

Effect of Collective Octupole Vibration on

Single-Particle States in Zirconium Region :

C. R. Praharai. 9

Nuclear Structure of Cr : S. Saini and

M. R. Gunye. 11

Level Structure of Nd-148 : J. B. Gupta. 14

A Microscopic Study of the Collective

Dilatational Oscillations in4Ca using

Generator Coordinate Method r S. P. Sharma

and B. B. Sriva stava. 15

Thermal Hartree-Fock Calculations for Finite

Nuclei : B. Datta. B. Banerjee and S. M.Chitre. 19

Role of Alpha-Cluster in Alpha Decay:

Rina Bhattacharyya and D. Baneriee. 23

Nuclear Structure Calculations for Even

Isotopes of Ca, Ti, Cr and Fe with Tabakin

Interaction : Y. K. Gambhir. S. Haq and

J.K. Suri. 24

Page.

Analysis of Electromagnetic Transitions in

A = 120-145 Region in Quasiparticle Model :

N. Krishna Rao and S. Ramamurthy. 25

Semitnicroscopic Description of1 5Pd,

107Cd, and l09Cd: M. B. Chatterjee and

S. Bhattacharya 28

A Crystal Structure Mass Formula for 4n

Nuclei : S. K. Gupta. 29

What is Effective Neutron Polarization? :

G. Ramachandran and R. S. Keshava Murthv. 32

Equations of Motion for the SU(n) Parameters

of the Density Matrix for a Nuclear System

with Higher Spin : G. Ramachandran and

M. V. N. Murthy. 33

Structure of He from Knock-out Photo-

Production of Pions : G. Ramachandran and

R. S. Keahava Murthv. 35

Application of Jastrow Theory to Finite Nuclei :

M. Dev. D.K. Paul and J. Dey. 38

Nuclear Structure Studies in the Zr»Region with

Sussex Interaction : Y. K. Gambhir. S. Haq and

J. K. Suri. 41

On the Goodness of the IBA Model Symmetries :

V.K.B. Kota. 44

A Study on the Usefulness of Various MixingParameters : V.K.B. Kota. 47

High Spin Yrast States In Transition Nuclei :

Ashok Kumar and M. R. Gunye. 50

Large and Very Large K. Bands in Nuclei :

C, RT Praharait 53

Microscopic Triaxial Description of *°7Ir,189Ir, 1S708j and 18(?rt : R. Sahu.

M. Satpathy and L. Satpathy. 55

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Z*X£.

Nuclear Structure of N = 86 Isotones of

Nd, Sm and Gd ! J. B. Gupta. 58

Anamolous Ground State Configurations in

Some Odd-Odd Rare Earth Nuclei :

R.N. Singh and P. C. Sood. 61

Very High Spin Mottelson-Ntlsson Calculations

with a Ntlsson-Newton Potential : G, Shanmugam. 64

NUCLEAR REACTIONS

A Classical Description of Strongly DampedCollision : R. C. Navak. L. Satapathy and

D.H. E. Gross. 67

Nuclear Excitation Mechanism in Deep

Inelastic Collisions of Heavy Ions :

S. Pal and N.K. Ganguly. 71

Average Excitation-Energies and Deformation

in Ion-Ion Collisions : D. K. Srlvastava and

S. C. Phatak. 75

Exact Solution of the Exciton Model Master

Equations and Applications : A. Chatteriee and

S.K. Gupta. 78

Formation Cross-Section of an EquilibratedNucleus In the Griffin-Williams Exciton

Model : Debapriyo Shyam,Aiov Kumar Mukheriee. Asok Saha and

Ashim Kumar GanguLy. 82

Fast Neutron Cross Sections of Fusion

Reactor Interest : C. V. Srinivasa Rao,N. Lakshmana Das, B. V. Thirumala Rao

and J. Rama Rao. 85

On Excitation Dependence of Single Particle

Level Density : Harashit Majumdar and

A. Chatteriee. 87

Nuclear Level Density Parameter for Finite

Depth Potentials : S.K. Katarla and

V. S. Ramamurthy. 90

Page

*35. Calculations o f Spin Cut off Parameter at

Different Energies using Various Models :

G. Singh. V. P. Varshney and A.K. Chaubey. 91

36. Study of Isobaric Analog Resonances in

42Ca through the Reaction 41K(p, n)41Ca :

S. Saini. • Gulzar Singh, A. Chatterjee and

M. K. Mehta. 92

*37. Compound Nucleus Contributions in the

Reaction Amplitudes in Mg(»< ,'<*, if) Angular

Correlations : S. R. Verma and

Rajendra Prasad. 95

38. Coulomb Excitation Studies on Cd and

133Cs with Protons : K. P, Singh,D. K. Arora. T. S. Cheema and H. S. Hans. 96

*39. Evaluation of Mean Fission Width for

233U in 0. 1 to 50 KeV Energy Region :

M. L. Sharma and S. Ganesan. 99

*40. Nuclear Level Structure of 195Pt :

R. G. Kulkarnt. K. Andhradev and

V.N. Kulkarni. 100

41. Impulse Aproximation Correction and Pion

Charge-Exchange Reaction : S. C. Phatak. 101

42. Charged Pion Photoproduction from Carbon

and Oxygen-: S. Susila and K. Srinivasa Rao. 105

43. 12C(Y,-f) I2N-Reaction Near Threshold :

V. Giriia and V. Devanathan. 108

+44. Fion-Nucleus Optical Potential at Low Energies :

V. Giriia and V. Devanathan. 112

*45. Polarization of the Outgoing Neutron and

Recoil Nucleus in f +l60 -* 15N+ Ti* + A

G. Ramachandran and K. Venkatesh. 113

46. Threshold Pion Photo Production on 14N :

M. V. N. Murthv. G. Ramachandran and

S.K. Singh. 114

47. Induced Pseudoscalar and Tensor Couplingin Muon Capture by I2C : V.N. Sridhar and

R. Parthasarathy. 117

><48. Partial Capture Rate and Recoil Nuclear

Polarization in /a" +28Si(0+) ~* 28Al(l+) + V^ :

R. Parthasarathy and V.N. Sridhar. 121

*49. Muon Ceature by Oxygen-l6 in the SAXON~

WOODS Basis : K. Srinivasa Rao and

R. Parthasarathy. 122

*50. Ve + d —*y +n+p at Reactor Energies :

S.K. Singh and S. A, Khan. 123

*51. Study of 40Ca - 40Ca Elastic Scattering at

Intermediate Energy : Ashok Kumar and

B. B. Srivastava. 125

52. R-Matrix Analysis of Unbound States :

Rama Das and Shankar Mukherjee. 127

*53. Heavy Ion Real Potentials for the Collision of

Oriented Nuclei and the Synthesis of New

Elements : R. Aroumougame and Raj K.Gupta. 130

54. Microscopic Calculation of the Deuteron-

Nucleus Optical Potential : H. R. Kidwair 131

55. Effect of the D-State Admixture on P- Li

Elastic Scattering in the << -d Cluster Model i

Z. A. Khan and L Ahmad. 135

56. Energy Dependence of the Real Part of Ion-

Ion Interaction Potential : B. Behera. K» C. Panda

and R. K. Satpathy. 138

57. Dependence of EFR-DWBA Results of 6LiInduced Alpha-Transfer Reactions on the -

Projectile Cluster Representation :

D. R. Chakrabarty and M. A. Eswaran. 141

*58. Systematic Features in Isospin Dependenceof Neutron Optical Potential : U. Satyanarayanaand S. Ramamurthy. 144

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*59. Investigation of Reaction Mechanisms in

(a, "f ) Cross-Sections : H. M. Agrawal,M. Afgal An sari and M. L. Sehgal. 145

*60. Elastic Scattering of Medium Energy Protons

on 4He s S. Ahmad. 2. A. Khan and I. Ahmad. 146

61. Global Description of Alpha-Nucleus Optical

Potential ; K.H.N. Murthv and S. K. Gupta. 147

62. Zero-Range DWBA Analysis for 54Fe(3He, p)56Coand 58Ni(d, d)56Co Reactions : Y.K. Gambhir. 150

*63. Simple Parametric Forms for the OpticalReaction Cross Sections : K. H. N. Murthy,A. Chatterjee and S.K. Gupta, 154

*64. Nucleus-Nucleus Interaction Potential :

B. Behera. K. C. Panda and R. K. Satpathy. 156

65. On the Minimum Potential Strength for the

Existence of Bound States : B. G. Sidharth. 157

*66. Non-Locality Corrections in DWBA : D. K. Srivastava

and N. K. Ganguly. 161

*67. A Microscopic Study of O + 170 Elastic

Scattering at Subcoulomb Energy : O. D. Sharma

and B. B. Srivastava. 162

68. A Microscopic Calculation of Alpha-AlphaElastic Scattering Taking into Account the

Polarisation Effects : A. J. Bahl and

B. B. Srivastava. 164

69. Evaluation of Unresolved Resonance Parameters

for 232Th in 4 to 41 KeV Energy Region :

S. Ganesan. 167

IIL NUCLEAR SPECTROSCOPY

*70. The Decay, of 2Ta : Ravinder Kaur,

A. K. Sharma, S. S. Sooch, H. R. Verma

and P.N. Trehan. 170

Page.

7671. Level Structure Studies in Se :

Ravinder Kaur, A.K. Sharma, S. S. Sooch,

H. R. Verma and P.N. Trehan. 171

*72. The Level Structure Studies In 132Xe :

S. S. Sooch, Ravinder Kaur, Nirmal Singh

and P.N. Trehan. 174

7 87

73. Low Lying Levels in Re Populated in the

Decay of 187W ; S. P. Sud. S. Yamafia,

Y. Miyatake and T, Hayashi. 17fc

74. Absolute Intensities of Delayed Protons

Emitted by Neutron Deficient Isotopes :

D. L. Sastry. D, G. S. Narayana,M. Srinivasa Rao, L. Raghavendra Rao

and V. Seshagiri Rao. 1S1

5575. Electromagnetic Properties of Fe Via

Mn (p, ny) Reaction : V. K. Mittal,

D. K. Avasthi and I. M. Govil. iUl

57*76. Energy and Lifetime of Levels in Co :

D.K. Avasthi. V. K. Mittal and I. M. Govil. 37

*77. Total Gamma-Ray Attenuation Coefficients in

Compounds for 0.662 and 1.25 MeV Photons :

V. Narishmha Reddv. K. Suresh Babu,G. Krishna Rao and D. V. Krishna Reddy.

*78. Half-Life of 225Ac : A. V. R. Reddy,R. J. Singh, V. S. Mallapurkar,C. R. Venkatasubramani, S. S. Rattan.

Satya Prakash and M. V. Ramaniah. '.-9

79. Collective Bands of f" Hole States in (fp)Shell Nuclei around N <-^28 Region :

P.P. Ahalpara and K.N. Bhatt. 190

*80. Study of E2 Transitions from 2+ State of the Y

Vibrational Band : K. K. Gupta. S.K. Bhardwajand D.K. Gupta. J 93

*81. Reduced E, Transition Probabilities for High

Spin States of Rotational Band in Rare Earth

and Actinide Regions : K. K. Gupta.

S.K. Bhardwaj and D.K. Gupta. 194

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Page.

*82. Systematica of E, Transitions in 2 —* O

and 4+—* 2 of Ground State Band in

Deformed Even-Even Nuclei : K. K. Gupta.

S.K. Bhardwaj and D.K. Gupta. 196

83. R-V Theory and E, Transitions in Even-

Even Deformed Nuclei : S. K. Bhardwaj.

K.K. Gupta and D.K. Gupta. 197

*84. Gamma Ray Transition Probabilities in E

Transitions for Odd A Nuclei : S.K. Bhardwaj,

K.K. Gupta and D.K. Gupta.'

200

85. Inner Btems strahlung Accompanying Beta

Decay of Tm1' : H. Sanjeeviah,

P. Venkataramaih and K. S. Gundu Rao. 202

86. Study of Inner Bremsstrahlung from Tc-99 :

Ganga Ram and N. N&th. 206

*87. TDPAC Studies of Electric Quadrupole Inter-

133action of Cs in Compounds of Barium

(3aCr20 ) and (BaCrO.) : B. L. Chawat.

S.N. A. Jaaffrey and J. Varma. 209

181

*88. Electric Quadrupole Interaction of Ta in

Silver and Copper : B. L. Chawat and J. Varma. 210

89. The Quadrupole Interaction of 1UCd in

Silver Iodomercurate : D. K. Sonjet.

S. S. Sharma and J. Varma. 211

90. Range of Electrons and Positrons in Detector

Materials : S.K. Gupta and D.K. Gupta. 214

*91. Semi Empirical Equation for the c. s. d. a.

Range of Positrons : S.K. Gupta and D.K. Gupta. 217

IV. NUCLEAR FISSION

92, Study of Emission of Alphas Tritons and

Protons in the Fast Neutron Fission of 6-"U :

S. C. L. Sharma. G.K. Mehta, R.K. Choudhury,

D. M. Nadkarni, S. S. Kapoojr and P. N. Rama Rao. 218

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93. Studies of Multidimensional

Correlations in LRA Fission of Z36U

and Determination of Scission Confi¬

gurations : R. K. Choudhurv.

D. M. Nadkarni, S. S. Kapoor and

P.N. Rama Rao. 222

*94. Angular Momentum in Fission : Dependenceof the Average Angular Momenta of Fission

Fragments on their Deformation in the

Neutron Induced Fission of 2^U . T. Datta.

S. P. Dange, A. G. C. Nair, Satya Piakash and

M. J. Ramaniah. 226

95. Charge Distribution in Low Energy Fission :

Effect of Shell and Nucleca Pairing on the

Width of Charge Distribution : S. B. Manohar,

S. P. Dange, T, Datta. P. P. Burte,

A. G. C. Nair, S. M. Deshmukh, Satya Prakash.

and M, V. Ramaniah. .

'

228

96. Nuclear Data for the Th/U Fuel Cycle :

Absolute Fission Yields in, the Neutron

Induced Fission of 232Th and 233U :

A. Ramaswami. V. Natarajan,

B. K. Srivastava and R. H. Iyer. 232

*97. Analysis of Prompt Neutron Anisotropics

as a Function of Fragment Kinetic Energy

in the Thermal Neutron Fission of 235U :

Rekha Govil and R.K. Choudhury. 236

98. LCRIT Deduced from Fragment Angular

Distributions in 4He Ion Induced Fission :

R. K. Choudhurv. Rekha Govil and

S. S. Kapoor. 237

99. Effects of Nuclear Interactions in Trajectory

Calculations : A.K. Sinha and G.K. Mehta. 239

*100. Spontaneous Fission-Character of °i -Decay

Even-Z-Odd N <*-Emitters : M.K. Basu. 243

Page

V. NUCLEAR FORCES AND NUCLEAR MATTER

101. Effective Nucleon-Nucleon Interaction from

Nuclear Matter Calculations Including Isobar

Degrees of Freedom : M. Dev.

A. Sahababu and B. C. Samanta. 245

102. Hyperspherical Harmonics Calculations

for 3H and 6He : S. P. Verma and

D. P. Sural. 248

103. Hot Dense Matter : N. Sahoo and R. K. Tripathi. 252

*104. Rest and Coulomb Energy Differences in Low 2.

Mirror Juclei : A. V. Radha, E, Shyamala Devi

and K. V. N. Saxma. 255

VI. EXPERIMENTAL TECHNIQUES

105. Measurement of Azimuthal Field Inhomogeneityof ^ Me'/ Betatron's Magnet Using Peaker

Strip : 3. L. Sharda and P. K. Dubey. 256

106. Beam Transport System for the 8MeV Race

Track Microtron : V. B. Asgekar,R.K. Bhalla, M. R. Bhiday, V.N. Bhoraskar

and 3. S. Raye. 259

107. An Annular Cathode Electron Gun for in Line

Injection in the Race Track Microtron :

V. B. Asgekar, R.K. Bhalla, M. R. Bhiday,

V.N. Bhoraskar and B. S. Raye. 262

108. Measurement of the Photon Flux of 8 MeV

Miciotron by Activation Analysis :

V. B? Asgekar, R.K. Bhalla, M. R. Bhiday,'AN. 3horaskar and B. S. Rave. 265

109. Proposed 1 MeV Ar Ion Linear Accelerator :

D. C. Kothari and M. C, Joshi. 269

110. Salient Features of the VEC Switching Magnet-1 :

K.J. Nambiar, S.--N. Chintalapudi, S.K. Das,1

.V. Marathe and A. S. Divatia. 273

Page

111. Operational Characteristics of a Solid-

cum-Gas, Magnetic-Oscillation TypeIon-Source in the Energy Range 3-10 KeV :

P. Chakraborty and S. D. Dey. 276

112. A Sputter Ion Source for Li" Ions :

V. S. Raju, T. P. David and S. Cangadharan. 230

113. Alpha Particle Track Detection by Kodak CA-80

Cellulose Nitrate Plastic : Ansarullah Khan and

D. S. Srivastava. 233

114. A New Etc hant for Soda Glass Nuclear Track

Detectors : K. L. Gomber, V. P. Singh,

J. S» .Yadav and A. P. Sharma. 2s7

115. Energy Spectrum of LRA Emitted in Fission

Using Track Detectors : S. C L. Sharma and

G.K. Mehta. 2"1

116. Automatic Spark Counting of Fission Fragmentsin Makrofol : A. K. Sinha and G.K. Mehta. 214

117. 3ulk and Track ETCH Ra-.e Studies of Some

Solid State Nuclear Track Detectors :

A. L. Maurva. S.N. Paul, S.K. Bose and

S. K, Tuli. 297

118. Detection Threshold of Solid State Nuclear

Track Detectors : B.K. Srivastava,

N. K. Chaudhuri. V. Uma and R. H. Iyer. 30<--

119. A Technique for the Rapid Enlargement of

Fission Fragment Tracks in Lexan Poly¬

carbonate : N. N. Ajitanand and K. N. Iyengar, 304

120. Measurement of Fragment Prompt ChargeDistribution in U. Fission Using Ioni-

sation Chamber TFSD Telescope :

N. N. Ajitanand. K. N. Iyengar and

S. R. S. Murthy. 3US

121. Calculation of Effects of Electronic

Threshold and Pulse Height Walk on

Observed Neutron Time of Flight Distri¬

butions ; N.N. Ajitanand. 311

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Pae;e

122. A New Methodology in the Determination of the

Half-Lives of Transactiniurn Isotopes :

S.K. Aggarwal, S. B. Manohar, S.N. Acharya,A. R, Parab, Satya Prakash and H. C. Jain. 314

123. Fabrication of Annular Radial Position Sensitive

Silicon Surface Barrier Detector: R. V. Srikhantiah,H. J. Shstty, B. Ghosh and V, S. Ramamurthy. 317

124. A Charge-Sensitive FreampliEier for the

Silicon Surface-Barrier Detectors :

M. B. Chatterjee and R. Bhattacharya. 320

125. A Tunnel-Diod« Circuit for Pulse-HeightSelection with Fast Scintillation Detectors :

K. A. Mathew and J. C, Palathingal. 324

126. 200-ev Resolution Si(Li) Detector X-ray

System Based on Pulsed Optofeed Back

Technique : Madan Lai, P. L, Bhatia and

S.K. Kataria. 327

127. A New Method of Evaluating A2 and A4

Coefficients in Directional Correlations :

Raj Mittal and H. S. Sahota. 330

AUTHOR INDEX 333