PROCBEDMGS OF THE SYWOStUM ON

LOW ENERGY NUCLEAR PHYSICS

1961

m&mmm m

thi tmms wwcm ecffMfftt

cbomuMwr or jnpu

PROGRAMME

27th February ±961

Morning Session 1

Chairman: R.K. Asvindi

JB.fi. SALP&TER** : Neutron Matter. 1

Morning Session 2

Chairman : D .M .Kundu

C.S. KHURANA AND H.S. HANS* : Comparison of experimental•and

theoretical values of Neutron Cross-sections at 14 Mev, 21

K.G. NAIR*, K.N. IYENGAR AND R. RAMANNA: The energy and angular

27distribution of protons emitted from Al due to 14 Mev

neutron interactions. 30

C. BADRINATHAN, M.L. JHIIMGAN* AND i£. KONDAIAH: Energy and

19angular distribution of charged particles from (F + n)

reactions. 40

CV.K. BABA* AND S.K. BHATTACHARJiE: Polarisation correlation

measurements on gamma rays in Gd. 47

B, BASU* AND A.P. PATRO : Disintegration of Rh9'. 49

M.R, BHIDAY* : Measurement of radiative correction to single

scattering of relativistic electrons from nuclei. 55

* Presented by this author.

«* Invited Talk.

iv

Afternoon Session 1

Chairman : B.V. Thosar!

B»S, SOOD **j Resonance Scattering of gamma rays. 64

B.N. SUBbA RAO* 5 Angular Correlation studies of the

133356 Kev—»&l Kev cascade in Cs . 84

S.I. AMBHii Am) R.P. SHAtOflA* ; Further Studies on the

decay of Rh 95

R« SRIwIVASa itaGHAVAij* 1 On the possibility of a new phase

determining method applying the Mossbauer effect, 104

B.S. SOOD'**' ; Recoil free resonance scattering of 14«4 Kev

57gamma rays in F©

. 109

Afternoon Session 2

Chairman: Vachaspati

M.K. BANMUiiiK** : Recent developments in the theory of

Nuclear Structure. 113

S.P. PAwDXA AmD S.K. SHAH* j s /y-pdrbicl« doublets in

the region Ava30. 136

A.N. MITRA* : Triton problem with separable potentials. 140

N.V.V.J. SWAMX AND R.J. KULKARNI* s Approximate estimate

of elactron scattering cross-sections with Brueckner's

charge distribution,, 143

vi

R.K. BHADURI* s Variation of 'equivalent density' with

mass number and its connection with the gas model. 146

K. KUMAR AND R.K. BHADURI* i An approximate method in the

theory of finite nuclei* 151

V.L. NARASIMHAM* 5 Studies of Nuclear matter by means of

non-local separable potential; . 155

28th February. 1961

Mprnjing Session 1

Chairman: Swami Jnanananda

R. RAMANNA** s Angular Correlations in the fission process.

R. RAMANNA, R. CHAUDHRX, S.S. KAPOOR*, K. MIKKiS, S.R.S.

MURTHI AND P.N. RAMA RAO j The angular correlation of prompt

neutrons and fission fragments in thermal neutron

fission of IT .

V.C. DENIZ*, V.A. GOKHALK AND K.V. SUBBA RAO : Low power

thermal flux measurements in the core of the Canada-India

Reactor,

Morning Session 2

Chairman: H.S. Hans

R.C. DESAI, B.P. RASTOGI*, K.R, SR1N1VASAN AND M.S. TRASI s

Some Physics calculations of C.I.R. 193

158

170

185

vii

M.S. TRASI (Presented by B.P. Rastogi) : Reactivity worth

of shutt off rods in C.I.R. 200

M.S. TRASI* { Reactivity due to an inpile loop in C.I.R. 205

M.S. TRASI* : Two group theory of a ring of N cylindrical

rods or zones in a reflected reactor. 211

R. SHANKAR'SINGH* ; Critical!ty studies of Project Phoenix. 218

K.R. SRIl\|IVASAN* : Calculation of effective resonance

integral for clusters. 223

K.R. SH1NIVASAM* j Buckling* of Organic cooled Heavy Water

moderated lattices. 228

R.C. DESAI* : A study of graphite power reactors. 233

R.D. JAIN AND R.C. DESAI* j A criterion for instability

due to temperature transients, 239

R.C. DiSSAI* AND K.R. SRINIVASAN : A five-zone, two-grqup

one dimwnsional cylindrical reactor programme for

the. TIFR digital computer. 245

P,K* MISHRA* j Use of higKl peraiability magnetic materials

in reactor control and data handling systems, 250

viii

1st March, 1961

Morning S&aai&fk., 1

Chairman: S. Ramaseshan

137 90K.G, VOHRA* : Cs

J(and Sr7 in milk from nuclear weapon tests. 251

U.C. MIoHRA* : Scintillation spectroscopy applied to

radioactive fall out measurements, 259

K.G. VOHRA, C. RANGAfciAJAN AimD G. SARDA* s internal gamma

radiation dose from long range fall out. 268

K.G, VOHRA AND N.A. IftGki* : Estimation of lung doae due to

inhalation of fall out products in the air. 277

D.N. KtiiJjKAR* : A gridded ionization chamber - single channel

analyser system for the estimation of alpha emitters

in the air, 285

M» RAMA RAO* ; A Low pressure cloud chamber for -study of

reaction products. 292

A.S. DI¥AT±A*, M.R. DkARAKAuATH AwD -JGia&PH JOHN : Polarised

proton beams by Lamb shift method. 301

Morning Session 2

Chairman: S.K. Bhattacharjee

E.S, RAJAGUPAL* AND K. GOPALAN s A data proc«ssing method

for nuclear pulse height analysis, 309

ix

R.K. MOHINDRA AND H.S. HaNS* : A triple coincidence proton

spectrometer. 314

M. RhMaKRIoHNA RAJU*, V. L^KSHMINhRmXANA AND SWaMI

JNANANAinDA : The absorption of beta radiation as a function

of atomic number, 320

S.C. MISRA* : A 4TTproportional counter. 332

A.S. MAHAJAN* AND A. MJKHKRJI : Design of a new baffle system

for the thin magnetic lens beta ray spectrometer. 337

Afternoon Session 1

Chairman : B. Venkataraman

R. BKRoOHIM AND T.P. DAS** : Many body aspects of dipolar

interactaon in crystal lattices. 341

R. CHIDAMBARAM * j N.M.R. and diffraction studies of the

structures of hydrates and the shape of the bound water

molecule,- 357

"H.D, NAG&SWARA RAO* s The ring proton resonance spectra of

o\ ,/o and q picolines. 365

R, VIJAYaRAGHaVAN* : Spin lattice relaxation time in

Tellurium, 372

R. RAJAN* j Electron paramagnetic resonance of some

cupric salts. 379

X

S. VISWJiSWARA MURTHI* j Design and construction of a Nuclear

Magnetic Resonance absorption spectrometer. 384

Afternoon Session 2

Chairman: R.S, Krishnan

P, ViiMKATisSWAtfLU** : The Millimeter wave spectroscopy and Maseru. 388

2nd March, 1961

ifirnjJlg Se.ssi.on. I

Chairman: A.R, Verma

G.N. RAMACHANDRAN** (Presented by R. Srinivasan) :

New synthesis for crystal structure analysis, 400

S» RAMASJBSHAN*: The atomic and thermal properties of

KNOo at 30° C and 118° C. 413

M.A, VISWAMIIRA'- (Presented by S. Ramaseshan) : The design

and application of a Weissenberg camera for studies

between -180° C and 200° C, 416

K, VBDAM* ; Crystal symmetry and the ferro-electric behaviour

of pyrolusite ( 6> -Mno.) 425

N.R.KUNCHUR* : A crystallographic investigation on the

structures of some co-ordination compounds of cobalt. 429

xi

Morning Session 2

Chairman j R.P. Singh

P.K, IXMIGAR, N.S. SATYaMURTHY AND B.A. DASANNACHARYA* j

Inelastic scattering of neutrons from Iron, 431

K. USHA*, G. yjiNKATARAMAN AND P.K. IYENGAR : Inelastic

scattering of thermal neutrons by liquid Bismuth. 439

R.G. LAGU*, N.P. SASTRY AND B.V. THOSAR : Spectroscopic

and decay time studies in the luminescence of Cs I(T1). 447

A. CHOUDHURY* ; Magnetic and luminescent properties of x-ray

and gamma ray irradiated crystals of Lithium fluoride

and Sodium Chloride. 457

P. KRISHNA AND .A.R. VbRMA* j A new type of Silicon Carbide-

57 R its structure and growth. 466

S,K. JOSHI* ; Dispersion of lattice waves in copper. 473

S. GANESAN AND R. SRINIVASAN* : Lattice dynamics and thermal

properties of calcium fluoride. 477

Afternoon Session 1

Chairman s P. Venkateswarlu

S.C. JAIN* AND D.N. SINGH : Electrical conductivity of

irradiated crystals of Alkali Halides, 479

V

xii

K,S» VENKATISSWaRLu"* ManOHARLaL AND J, SHANKAR : Radiation

annealing of recoil damage in solid tris acetylacetone

Co (III) dispersed in Matrix of tris Acetylacetone Al(lII). 488

D.N. PAMDfi* AND D.P, KHANDiiLWAL : The fluorescence spectrum at

liquid air temperature of a sample of Uranyl sulphate

obtained by heating the trl-hydrate with sulphuric acid, 494

C» RAMASASTRY* AND B.S.V. GOPaLAM ; Radiation effects in

semi conductors. 499

C, RAMASASTRY* AND S.K. GHOSH j Diffusion studies in semi

donduotor crystals using radio isotopes. 500

S. RAMAMURTHY* j Double beta decay, 501

Afternoon Session 2

Chairman * K.K. Gupta

A. RAMAKRISHNAN* : Particle antiparticle dualism,r4-

A. RAMAKRISHNAN, G, RAMACHANDRAN* AND V. DiiVANATHAN s A time

dependent approach to rearrangement collisions. 508

VACHASPATI AND L.H. BALI* » Manifestly relativistic form of

definition of Uniform acceleration and remarks concerning

its conformal invariance, 512

M. SAMIULLAH AnD R. RAMAOHANDER : On.the intimate linking of

spin and orbital angular momentum in the electron theories. 518

t Manuscript not received.