CONTENTS OF VOLUME 44 Number 1/2 FIRST RADIATION PHYSICS CONFERENCE M. A. M. Gomaa, A. Z. El-Behay, Vil Preface G. M. Hassib, A. M. El-Naggar and A. H. El-Kamel F. H. Hammad IX Foreword John H. Hubbell XI Introduction XIll_ Key to Participants /. General Section Younis S. Selim and Mahmoud |. Abbas 1 Source—detector geometrical efficiency E. E. Abdel-Hady, A. M. A. El-Sayed 5 Target thickness dependence of build-up bremsstrahlung and N. Nagy accompanying £ decay of *Tc and ?TI H. R. Saad, H. Ashry, A. El-Lawendy 9 Decay scheme of '“°Ce nucleus and S. S. Fares R. Ravishankar, Mausumi Sengupta, 19 Semi-empirical depth dose distribution formula for ©°Co y-rays Tapas Bandyopadhyay, G. Muthukrishnan and A. M. Ghose il. Interactions of Radiation with Matter D. B. Isabelle 25 The PIXE analytical technique: principle and applications A. M. A. El-Sayed, E. E. Abdel-Hady, 31 Dose effect in gamma-irradiated polyethylene studied by R. A. M. Rizk and M. Mohsen positron annihilation lifetime technique N. A. Eissa, N. H. Sheta, 35 Mossbauer effect study of the effect of gamma irradiation on the W. M. El-Meligy, S. M. El-Minyawi behaviour of iron in sodium silicate glasses and H. A. Sallam F. M. Ezz-Eldin, |. Kashif and Some physical properties of gamma-irradiated alkali—silicate H. A. El-Batal glasses N. A. El-Alaily, F. M. Ezz-Eldin and Durability of some gamma-irradiated alkali borate glasses H. A. El-Batal I11. Radiation Detection and Dosimetry G. M. Hassib 53 Recent developments in radiation measurements using nuclear track detectors Ahmad Sharief Odeh 57 The reduction of Si diodes dark current for X-ray dosimetry Ahmad Sharief Odeh 61 X-ray dosimetry using a Cd sulphide photoresistor M.S. Rasheedy, F. Nishimura 63 Studies on the dosimetric properties of TLD-300 and T. Iichimori H. M. Eissa, S. A. El-Fiki, N. El-Enany, 69 Effect of pre- and post-gamma-irradiation of the etching M. El-Bahrawy, R. |. Mohammed characteristics of some SSNTDs and H. M. El-Husseiny B. A. Henaish, A. M. El-Agrami, 73 Characteristic thermoluminescence of gamma-irradiated W. |. Abdel-Fattah and W. G. Osiris alumina ceramics doped with some alkali metals N. K. Ahmed, M. H. Saied, 79 Measurements on the background atmospheric ?7*Rn and 7°Rn A. H. El-Kamel and A. M. M. Yousef concentrations in the Qena desert iv Contents of Volume 44 lV. Radiation Measurements and Calibration W. E. Y. Abdel Malik, A. S. Ibrahim, 83 Estimation of unknown activities by comparative calibration S. K. Youssef and M. A. Gomaa method M.S. El-Tahawy, M. A. Farouk, 87 Natural and artificial radionuclides in the Suez Canal bottom N. M. ibrahiem and sediments and stream water S. A. M. El-Mongey M. S. El-Tahawy, M. A. Farouk, 91 Analysis of the gamma-emitting impurities in "Tc and spent A. A. Hamed and N. M. Ibrahiem °°Mo generators M.H. Saied, A. Abbady, A. H. El-Kamel 95 Natural radioactivity of granite rocks in Wadi Qena and A. El-Arabi A. El-Hussein and A. A. Ahmed 99 Activity size distribution of natural radionuclides N. K. Ahmed, M. H. Saied, A. Abbady 103 Measurements of natural radioactivity inside Dandara temple and A. H. El-Kamel V, Vi. Radiation Shielding (A & B) R. M. Megahid, A. M. |. Kany, 109 Spectra and fluxes attenuation of 14MeV neutrons in A. El-Sayed Abdo and M. S. M. |. Kany iron—graphite shields A. M. Hathout 115 Application of the kernel method on ET-RR-1 reactor shield E. Amin, N. Ashoub and A. Elkady 119 Neutron and gamma ray total dose rate determination using ANISN Esmat Amin 125 Review of shielding computation methodology with emphasis on the experience in the National Center of Nuclear Safety and Radiation Control Yoshihiro Asano and Nobuo Sasamoto 133 Development of shielding design code for synchrotron radiation beam line Waleed H. Abulfaraj and Salah M. Kamal 139 Evaluation of ilmenite serpentine concrete and ordinary concrete as nuclear reactor shielding Waleed H. Abulfaraj, 149 Design of a temporary radioactive waste storage facility Tamim A. Samman and Salah El-Din M. Kamal A. M. 1. Kany, M. |. El-Gohary and 157 Thermal, epithermal and thermalized neutron attenuation S. M. Kamal properties of ilmenite—serpentine heat resistant concrete shield W. A. Kansouh 161 Studies of radiation penetration and effect of air voids in bulk concrete shield configurations Vil. Radiation Protection, Safety and Control Mohamed |. Hussein, A. Z. Hussein, 169 Radiation levels in ancient Egyptian mummies M. F. Barakat, S. Nakhla and N. Iskander M. W. A. Essa, A. T. A. Abdel Fattah, 173 Radioactivity in some imported products used in certain indus- R. M. K. El-Shinawy and M. A. Gomaa tries in Egypt B. A. Henaish, A. A. Tawrfik, 177 Estimation of collective effective dose due to natural H. Abu Zaid and M. A. Gomaa background radiation in Egypt Rifaat M. K. El-Shinawy 181 Safe transport of radioactive materials in Egypt Vill. Medical and Biological Applications H. A. Ashry, N. S. Selim and 187 The effect of gamma-rays on the hemoglobin of whole-body A. Z. El-Behay irradiated mice Contents of Volume 44 Vv Soad Abd El-Salam, R. M. Yousri 191 Blood lipid fractions of rats after cumulative gamma irradiation and T. Sallam Saad El Din, A. Aisha and A. Z. El Bahay 195 Effect of gamma irradiation on infrared spectra of rat hemoglobin M. Ayad, Abdulrahman Melibary 199 Patient exposures in Saudi diagnostic radiology and Tajuddin Malabary A. Mamoon, A. A. Abdul-Fattah and 203 Thermoluminescence of irradiated herbs and spices W. H. Abulfaraj IX. Radiation Physics in Earth Sciences Abdalla A. Abdel-Monem, 207 Radioactivity and origin of U-mineralization at the Kab Amiri H. A. Hussein, M. A. El-Taher area, Central Eastern Desert, Egypt and Saleh E. Ammar S. O. El Khateeb and A. M. El Akraby Fracture analysis and its relation to radioactivity around Gebel Um Risha, South Eastern Desert, Egypt M. M. M. Mousa and S. O. El Khateeb Rock unit mapping using statistical analysis applied to aero- radioactivity data and trend analysis for Bir Araiyida and surrounding area, North Eastern Desert, Egypt E. E. Abdel Hady, A. M. A. El-Sayed, Natural radioactivity of basement younger granite rocks from the A. A. Ahmed and A. Z. Hussein Eastern Desert A. Abbady, M. H. Saied, A. H. El-Kamel Natural radioactivity of sand samples by low-level gamma and A. El-Arabi spectrometry X. Industrial and Other Applications A. Mamoon, A. A. Abdul-Fattah 229 Variation of radon-222 concentration in exposure systems air and T. M. Qari under different conditions of exposure A. S. Abdel-Haleem, E. E. M. Zohny and 233 The use of neutron attenuation in borated materials as an R. A. Zaghloul indicator of their boron content W. M. Arafa, H. Alneimi, L. Al-Houty and 237 Some improvements of charcoal measurement techniques used H. Abou-Leila for indoor radon measurements in Qatar X!l. History and Teaching Radiation Physics in Egypt A. M. |. Kany 241 A special concept in experimental radiation physics education Muhammad A. Gomaa and 245 Radiation protection educational programmes in Egypt Anas M. El-Naggar Number 3 E. G. Mavroyannakis 247 Evolution features of the nth order kinetic processes E. Nedkov and S. Tsvetkova 251 Effect of gamma irradiation on the melting characteristics of ultra high molecular weight poly(ethylene oxide) E. Nedkov and S. Tsvetkova 257 Structure of poly(ethylene oxide) hydrogels obtained by gamma irradiation Zhong-Li Ding, Masaru Yoshida, 263 Thermo-responsive behavior of a methacryloyl-0L-alanine Masaharu Asano, Zue-Teh Ma, methyl ester polymer gel prepared by radiation-induced poly- Hideki Omichi and Ryoichi Katakai merization Geni R. Sunaryo, Yosuke Katsumura, 273 Radiolysis of water at elevated temperatures—|. Irradiation with izuru Shirai, Daisuke Hiroishi gamma-rays and fast neutrons at room temperature and Kenkichi Ishigure vi Contents of Volume 44 Myran C. Sauer Jr and Charles D. Jonah 281 The ratio of triplet to singlet excited state formation from ion recombination in the radiolysis of aromatic solutes in alkane liquids Mohamad Al-Sheikhly 297 The reactivity of adenyl and guanyl radicals towards oxygen Zhang Lihua, Zhou Maotang and 303 Effects of structure multiplicity on mechanism of radiation Chen Donglin crosslinking of polymers Charles L. Crawford, 309 Pulse’ radiolysis of aqueous’ solutions of sodium Mohammad R. Gholami, tetraphenylborate Ravindra N. Bhave and Robert J. Hanrahan N. G. Joshi, S. J. Dhoble, S. V. Moharil 317 Effect of particle size on gamma ray induced decomposition in and A. N. Garg KI and KI: KNO, crystals Young Soo Kang, Hugh J.D. McManus 323 Ap electron spin resonance study on the gamma-irradiation of and Larry Kevan urea, urea-d,, 1,3-dimethylurea, 1,3-diethylurea and 1,1',3,3’- tetramethylurea M. Mateev 329 A radiation method for variation of the insulator-conductor transition of polyethylene compositions W. M. Bartczak and A. Hummel 335 Kinetics of charge recombination in high-energy electron tracks in nonpolar liquids, calculated by computer simulation. The survival of the charged species at long times Technical Note D. M. Timus 341 Further study of the flux density distribution of a disk-shaped, isotropically emitting source in nondispersive media 347 Erratum | Announcements Number 4 Norihiko Fujita, Harutsugu Morita, 349 Radiation induced CO, reduction in an aqueous medium Chihiro Matsuura suspended with iron powder and Daisuke Hiroishi S. Araikum, T. L. Nam and R. J. Keddy 359 Radiation dosimetry based on the radiophotoluminescence of synthetic diamond Donald B. O’Connor 371 Pulse radiolysis with circular dichroism detection V. Badescu 377 Flux geometric factors of a spherical source of non-isotropic radiation Qi Yao, Limin Liu and Changjiang Li 381 Low energy proton implanted polyaniline V. Haddadi-asi, R. P. Burford 385 Radiation graft modification of ethylene—propylene rubber—|. and J. L. Garnett Effect of monomer and substrate structure M. A. Sharaf 395 Depth-dose in an anthropomorphic head phantom for mono- energetic photons B. D. Symeopoulos, H. Papaefthymiou Oscillatory annealing behaviour of three neutron irradiated and M. Soupioni inorganic crystalline compounds T. K. Saha, Mubarak A. Khan 409 Physical and mechanical properties of ultraviolet (UV) cured and K. M. Idriss Ali films Mubarak A. Khan and K. M. Idriss Ali 415 Dose effect in the wood plastic composite formation in the presence of additives and co-additives K. M. Idriss Ali, Mubarak A. Khan 421 Role of additives in wood plastic composite of water soluble and M. M. Husain monomer Contents of Volume 44 Vii K. M. Idriss Ali, Mubarak A. Khan 427 Study of wood plastic composite in the presence of nitrogen and M. M. Husain containing additives P. G. Fuochi 431 Irradiation of power semiconductor devices by high energy electrons: the Italian experience M. A. El-Kolaly, M. E. Kassem, 441 Thermoluminescence and dielectric response of LiKSO,:Gd to A. A. Higazy, L. Z. Ismail y -radiation and L. |. Al-Houty 447 Corrigendum Announcements Number 5 E. Janata 449 Instrumentation of kinetic spectroscopy—12 . Software for data acquisition in kinetic experiments E. Bothe and E. Janata 455 Instrumentation of kinetic spectroscopy—13 . a.c.- Conductivity measurements at different frequencies in kinetic experiments G. S. Brar, Apjit Kaur Sandhu, Exposure buildup factors for bakelite, perspex and magnox-A12 Makhan Singh and up to 40 m.f.p. using the interpolation method Gurmel S. Mudahar G. A. Schreiber, A. Leffke, M. Mager, Viscosity of alkaline suspensions of ground black and white N. Helle and K. W. Boégl pepper samples: an indication or an identification of high dose radiation treatment? Yulu Mao, Gert Lubec, Nikola Getoff, 473 The effect of homocysteine thiolactone and its a-alkylated Sonja Solar and Ruth M. Quint derivative on the survival of irradiated F&. co/i AB1157 Benon H. J. Bielski, Virender K. Sharma Reactivity of ferrate(V) with carboxylic acids: a pre-mix pulse and Gidon Czapski radiolysis study Janusz Bednarek and Andrzej Plonka ESR studies on reactivity of HO, radicals in polycrystalline ice: non-monotonic changes of disproportionation rate in the temperature range 100-200 K N. Getoff, A. Ritter, F. Schwo6rer and 491 Steady-state and pulse radiolysis of triethylsilane in cyclohexane P. Bayer with product analysis Sunil Sabharwal, Kamal Kishore 499 Pulse radiolysis study of oxidation reactions of sulphacetamide and P. N. Moorthy in aqueous solutions S. Sabharwal and K. Kishore 507 Pulse radiolysis study of reactions of tetracycline with radio- lytically generated reducing species Fevzi Kokskal and Recep Tapramaz Electron paramagnetic resonance of gamma irradiation and ultraviolet photolysis products in t-butylphosphonic acid Santa Bandyopadhyay, Compton profile of cuprous oxide Arun Kumar Chatterjee, S. K. Saha and A. Chatterjee Vadim V. Krushev, Hitoshi Koizumi, Relation between track structure and LET effect on free radical Tsuneki Ichikawa, Hiroshi Yoshida, formation for ion beam-irradiated alanine dosimeter Hiromi Shibata, Seiichi Tagawa and Yoichi Yoshida M.E. Kassem, A. E. Hamed, L. Abulnmasr 527 Gamma-radiation and isotopic effect on the critical behavior in and S. Abboudy triglycine selenate crystals J. Baré, M. Roteta, 531 Analytical cross sections for Monte Carlo simulation of photon J. M. Fernandez-Varea and F. Salvat transport viii Contents of Volume 44 H. Miller 553 Comment on the paper by Blackburn and Yassine (1989) “Hot atom reactions in neutron irradiated solid iron group metallocenes”’ 555 Book Review Number 6 V. Gueguen, L. Audouin, B. Pinel 557 Radiochemical oxidation of an ethylene-propylene-hexadiene and J. Verdu terpolymer F. Naimian, A. A. Katbab and 567 Post-irradiation stability of polyviny! chloride at sterilizing doses H. Nazokdast H. Ozyol 573 Studies on the effective atomic numbers of some human tissues in the energy region 15-100 keV L. Cota, M. Avalos-Borja, 579 Comparison of irradiation effects of electrons and gamma rays E. Adem and G. Burillo on PVC samples S. N. Basahel, M. M. El-Fass, 583 Gamma irradiation effects on the kinetics of the non-isothermal A. A. El-Bellihi, E. A. Al-Sabban decomposition of potassium nickel oxalate and El-H. M. Diefallah A. M. Raitsimring and V. V. Kurshev 589 Spatial distribution and accumulation of radicals arising in organic solids under the action of glow discharge G. Filardo, S$. Gambino, G. Silvestri, 597 Carboxylation of a linear low density polyethylene via gamma E. Calderaro and G. Spadaro irradiation in presence of carbon dioxide in subcritical and supercritical conditions H. Pal, T. Mukherjee and J. P. Mittal 603 One-electron reduction of 9,10-anthraquinone, 1-amino-9,10- anthraquinone and 1-hydroxy-9,10-anthraquinone in aqueous- isopropanol-acetone mixed solvent: a pulse radiolysis study B. L. Gupta Kinetics of radiolytic oxidation of ferrous ions in some aqueous aerated systems Kunie Ishioka and Hirotomo Hase 617 Hydrogen molecules trapped in irradiated solid ethanol 1. Janovsky, K. K. Mehta Dose distribution in polyethylene irradiated with a 10-MeV and V. J. Lopata electron beam C. L. Renschlier, J. T. Gill, R. J. Walko, Solid state radioluminescent lighting C. S. Ashley, T. J. Shepodd, S. T. Reed, G. M. Malone, L. E. Leonard, R. E. Ellefson and R. L. Clough A. Yousefi and A. A. Katbab 645 Post irradiation degradation of polypropylene radiation durability of polypropylene stabilized with phenolic stabilize(1r! ) Shao Chunlin and Yu Zengliang 651 Research into releasing inorganic phosphate and base from 5’-dTMP irradiated by a low energy ion beam Jiazhen Sun, Yuefang Zhang, 655 Modification of polytetrafluoroethylene by radiation—1. Xiaoguang Zhong and Xianglin Zhu Improvement in high temperature properties and radiation stability Technical Note M. R. Al-Masri and M. Zarkawi 661 Effects of gamma irradiation on cell-wall constituents of some agricultural residues Invited Summary A. H. Weiss, E. H. Ottewitte, 665 Summary of The Fifth International Workshop on Slow Positron B. W. Augenstein, A. B. Denison, Beam Techniques for Solids and Surfaces V. J. Ghosh, F. M. Jacobsen, K. KriStiakova, K. G. Lynn, R. M. Nieminen, K. A. Ritley and P. J. Simpson Contents of Volume 44 Letter to the Editors igor V. Khmelinskii 671 Comments on “A re-examination of the decay kinetics of pulse radiolytically generated Br, radicals in aqueous solution” Announcements