IS* International Cosmic Ray Conference VOLUME a PLOVDIV* "*V ,W* BULGARIA AUGUST 13-86,1377 15" International Cosmic Ray Conference CONFERENCE PAPERS VOLUME a OG SESSION BULGARIAN ACADEMY OF SCIENCES PLOVDIV. BULGARIA AUGUST 13-26,19(77- Ill PREFACE The present publication contains the proceedings of the 15th International Cosmic Ray Confe- rence, Plovdiv, 13-26 August, 1977. This Conference is to be held under the auspices of the Inter- national Union of Pure and Applied Physics, organized by the Bulgarian Academy of Sciences. The publication comprises 12 volumes. Volumes from 1 to 9 include the original contribu- tions, which have arrived at the Secretariat of the National Organizing Committee by May 26, 1977. Papers which have been declared but not submitted by that date have been represented by their abstracts. Volumes from 10 to 12 include the invited and rapporteur lectures, as well as late origi- nal papers. Volume 12 contains the general contents of the volumes, an authors' index and other references. All papers included in the present publication are exact reproductions of the authors' original manuscripts. The Secretariat has not made any corrections or changes in the texts. The original contributions have been accepted and included in the programme after a decision of the Interna- tional Programme Advisory Board of the 15th ICRC on the basis of their abstracts. The full texts of the papers, however, have not been refereed by the editorial board of the present publication. The first nine volumes have been organized in accordance with the classical headings adopted at the cosmic ray conferences, which also coincide with the sessions. Volume 1 - OG (Origin) Session Volume 2 - OG (Origin) Session Volume 3 - MG (Modulations and Geophysical Effects) Session Volume 4 - MG (Modulations and Geophysical Effects) Session Volume 5 - SP (Solar Particles) Session Volume 6 - MN (Muons and Nutrinos) Session Volume 7 - HE (High Energy Physics) Session Volume 8 - EA (Extensive Air Showers) Session Volume 9 - T. (Techniques) Session The National Organizing Committee is indebted to the invited reporters and rapporteur lec- turers, as well as to all authors of original papers, who, by their hard and highly qualified work, have contributed to the success of the Conference and have made possible the publication of the present proceedings. We also express acknowledgement to the members of the Organizing Committee and the Se- cretariat of the Conference, as well as to the Publishing House of the Bulgarian Academy of Sciences, without whose diligent work the publication of the proceedings would have been im- possible. Acad. Christo Ya. Christov Chairman of the National Organizing Committee I\ BULGARIAN NATIONAL ORGANIZING COMMITTEE Honorary Chairman - Acad. A. Balevsky, President of the. Bulgarian Academy of Sciences and Member of the State Council Executive Chairman: Ch. Ya. Christov Vice-Chairman: P.N. Markov Secretary: B.L. Betev Members: M. Borisov, I. Todorov, G. Nestorov, K. Serafimov, Ts. Bonchev, Ts. Petkov, D. Pari- kian, N. Balabanov, J. Stamenov, L. Popova, St. Kavlakov, T. Stanev, N. Ahababian, S. Ushev, Ch. Tchernev, T. Palev, I. Kirov, J. Georgiev, L. Katsarsky MEMBERS OF THE COSMIC RAY COMMISSION OF IUPAP Chairman: Professor A.J. Somogyi (Hungary) Secretary: Professor S. Miyake (Japan) Members: Professor A.E. Chudakov (USSR), Professor R.R. Daniel (India), Professor R. Gall (Mexico), Professor B. Peters (Denmark), Professor K. Pinkau (FRG), Professor H. Reeves (France), Professor C.J.Waddington (USA), Professor A.W. Wolfendale (UK) INTERNATIONAL PROGRAMME ADVISORY BOARD Chairman: Professor Ch. Christov Secretary: Dr B. Betev Members: Professor A. Chudakov (USSR), Professor H. Elliot (UK), Professor S. Miyake (Japan), Professor S. Nikolsky (USSR), Professor K. Pinkau (FRG), Professor A. Somogyi (Hungary), Professor C. Waddington (USA), Professor G. Yodh (USA) The 15th International Cosmic Ray Conference is organized by the Bulgarian Academy of Sciences under the auspices of the International Union of Pure and Applied Physics. ADDRESS OF SECRETARIAT Institute for Nuclear Research and Nuclear Energy Sofia 1113, 72 Btvd Lenin Telephone: 7341 Telex: SOFIA BAN 22424 TABLE OF CONTENTS VOLUME 2 - ORIGIN COSMIC RAY SOURCES OG-112 Search for Anisotropy of Cosmic Ray Muons Y.Kamiya, S. I ida, S. Shibata andl.Kondo (Abstract) OG-113 Enhancement of the High Energy Part of the Cosmic R^yS Flux of Nuclei J. C. Jodogne (Abstract) GG-114 Contribution to the Galactic Cosmic-Kay Flux from Pulsars J. C. Jodogne (Abstract) OG-115 About the Role of the-Center of the Galaxy as the Source of Cosmic Ray^.'-" Ya. M. Khazjfn and V. S. Ptuskin OG-116 Stellar Death and Cosmic Rays ^^^W. D. Arnett and D. N. Schramm (Abstract) OG-117 Nucleosynthesis and the Origin of Galactic Cosmic Rays 10 D. N. Schramm and W. D. Arnett OG-1T8 The-€oronal4onizationJlIodeL..F^^ Sources ___.————-— -14- Mr-Ga^s^TEa P. Goret (Abstract) CG-119 Cosmic Rays from Pre-Main Sequence Stars 15 H.Reeves and C.J.Cesarsky OG-120- Selective Injection as an Accessory of Fermi Acceleration in Supernova Remnants ,20-- M. M. Shapiro and RTSilberbeig^ CG-121 Structure of Pre - Supe r nova ,Sta-rs"Srid^roduct ion of" Black--- Holes as Meired-frSmNeutrino and Hardphoton Pulses _Ms^frSHapiro and R. Silberberg CG-122 High-Energy Cosmic Neutrinos and Photons from Point Sources, and Implications for Galactic Confinement 26 i/ R. Silberberg and M. M. Shapiro OG-123 Nature of Galactic Cosmic Ray Sources 30 R. Cowsik and M. A. Lee (Abstract) CG-124 - Nearly Loss-Free Escape of Cosmic Rays froirrSupernova Remnants 31 S. J. Schwartz and S. Street OG-125 Avoiding Adiabatic En urther Developments S. J. Schwartz, J. Skill OG-126 Corpuscular and liatlon of Supernova and Radiocarbon s Atmosphere V.A.I v (Abstract) OG-127 Pulsars and Cosmic Bays In thet)ense Supernova Shells V. S. Berezinsky and O. F. Prilutsky OG-128 Propagation of Cosmic Bays in Extragalactic Radio Sources * J. A. Earl COSMIC RAY INTERACTION OG-129 Light Elements Production by Galactic Cosmic Rays-the yt State .of Affairs H. Beeves and J. P. Meyer OG-130 , Deuterium Production by Cosmological Cosmic Rays ^ T. Montmerle OG-131 Some Additional Indications of the Contribution of Interstellar Helium to Cosmic Ray Spallation G. M.Raisbeck and F. Yiou OG-132 Experimental Cross Sections for the Pickup of Electrons by Relativistic Nuclei G. M.Raisbeck, H.J.Crawford, P. J. Lindstrom, D. E. Greiner, F. S. Beiser and H.H.Heckman CG-133 Cro^Sections for bL-roL-* Be at 400 60fit and lOCKMeV F. YiouSG. M.Raisbeck and H. Quecho/ n / OG-214 Cross Section Measurements for Pnalauction of Stable Isotopes of Ne ancPAx by High-Energy Spallation of Al, Sc, Ti, Fe, Co, NvandCu, S. Regnier CG-212 IsotoDe Production Cross j^ctib^s from Fragmentation of at Relativistic Energies H.J.Crawford, F.S. Bjeser, B. Corl^JH. H. Heckman, D. Greiner and P.J. I^ndstrom (Abstrac OG-223 Isotope Production Cross Sections from Fragmentation of 14N at Relativianc Energies P. J. Lindstroni, F.S. Bieser, B.Cork, H.Crawford, H. H. Heckmsm and D, Greiaer Vll OG-134 Calculations of Fragmentation Cross Sections of Nuclei In High Energy Collisions 83 E. Jullusson (Abstract) / / OG-135 Modification of\ Semiemptorfea l Equations for Calculating Partial Cross Sections of p-Nucleus Reactions 84 R. Silberberg and pm.Tsao OG-136 Calculations o^NucIeu^rNucleus CrosB Sections and the Attenuation of Complex Cosmic Ray Nuclei in the Atmp&phere \ 89 R. Siljaiferberg and C. H. Tsao\ OG-137 Cross Sections for Production of "Boron Isotopes in Carbon Spallation: Propagation of the Light Cosmic Ray ^ Nuclei 95 * Pierre Fontes x OG-138 Transport of Cosmic Rays in Supernova Remnants 101 G. Morfill and M. Scholer (Abstract) / OG-139 The Energy plectrum of Cosmic Ray/Leaving a Supernova Remnant \ ./ 102 M. Scholer an^G. Morfill (Abstract) s IMPLICATIONS 05 THE COMPOSITION OF COSMIC RAYS / / OG-140 Ionization States and\heOrigin of Low Energy (1-30 MeV/amu) Cosn^fc Ray Nuclei 103 N.Durgaprasad and ^Bicwas OG-141 About the Ihfluendtfof the Ionization Losses on the / v Abundance of Gosmic Ray SecQndary Nuclei 109 Ya. M. Khazanr / \ 44 OG-142 Cross Sections for Spallation Production of Ti: Application to Determining Cosmic kay Acceleration Timpr 115 GyM. Raisbeck and F. Yiou (Abstract) 26 OG-143 Cross Sections for the Production of A1 from Targets / of Si, Al and Fe Irradiated by Protons of 600 MeV IIP V V G.M.Raisbeck, C.Menninga, R.Brodzinski and N. Wogman O G-144 A Two Zone Cosmic Ray Propagation Model and Its Implication of the Surviving Fraction of Radioactive Cosmic Ray Isotopes 347 M. Simon, R. Scherzer and W. Enge OG-145 A Two Zone Cosmic Ray Propagation Model and Its / Implication of the Source Composition and of the Energy v Dependent Abundance of Cosmic Ray Nuclei 125 M. Simon OG-146 Silicon, Sulphur, Argon\Calciui3^-Puzzling Thougits on a Key Quartet 131 M. Casse and J. P. Meyar \ OG-147 Realistic Uncertainties on Galactic Abundances and . / Significance of the Cosmic Ray Source Composition 137 / * J. P. Meyer and H. Reeves -13 OG-148 Mass Composition of Primary Cosmic Rays above 10 eV 143 J. Olejniczak, J. WdowczyKand A. W. Wolfendale OG-149 Comments Regarding Hierarchical Models of Cosmic / Ray Origin 148 K. Sitte SIDERIAL VARIATIONS OF COSMIC RAYS OG-150 Time Variation of Small Showers 153 C.Aguirre, R.Anda ano^D. Andreiie&i (Abstract) OG-151 Sidereal Anisotropy of.Srfi^l Air Showers Observed at Mt. Norikura \ 154 K. Nagashimay^Tsakakibara, X, Fujimoto, Z. Fujii, H. Uenoaatfl. Kondo \ OG-152 Year to Year Variation of Sidereal Anisotropy of Cosmic . /Rays 160/ V M. Ichinose OG-153 Some Thoughts^n Musala Anisotrop^; Pitch Angle Distribution or 166 J.