[en] The author presents an autobiographical survey on the development of nuclear physics since 1935. (HSI)

[en] The scattering amplitudes for gravitons, antisymmetric tensors and gauge bosons in the heterotic string are calculated. From these amplitudes the low-energy effective action up to the quartic interactions are derived. Furthermore, the spin connection naturally contains torsion whose sign is unambiguously determined by the string amplitudes are shown. The quartic interaction arising from the pure heterotic string has the form (Tr(F² - R²))², that vanishes when the gauge field is embedded in the spin connection with torsion. In the second part amplitudes for the massless particles are evaluated in Witten's open superstring field theory. The results coincide with the conventional ones except the four-boson amplitude. There is a contact term for the four-boson amplitude arised when two picture changing operators are approaching to each other. It indicates that Witten's open superstring field theory has to be modified to preserve gauge symmetry

[en] An overview is given of Physics Division activities in the following areas: the heavy-ion booster; medium-energy physics; heavy-ion physics; low-energy charged-particle physics; accelerator operations; neutron physics; theoretical nuclear physics, and atomic and molecular physics. A bibliography of publications amounts to 27 pages

[en] The history and scope of the Nuclear Data Project are sketched. Then the format and contents of the computer-based Evaluated Nuclear Structure Data File are reviewed. As of 1 January 1977, the data file contained 5322 data sets

[en] The fission product data have been organized by A-chains in order of ascending A from A = 72 to A = 167. The heading page is followed by more detailed information on the individual members of the chain in order of increasing Z and decreasing metastable state. The detailed information for each member includes the ENDF/B-IV File 1 comments and references if available and applicable to the decay data. Following the comments is a decay scheme of the nuclide tabulating the quantities T/sub ¹/₂/, Q, branching ratio (BR), (E/sub γ/), (E/sub β/), and (E/sub α/). Uncertainties are given if available in the file. Independent fission yields are given, as well as thermal cross sections and resonance integrals as obtained from ENDF/B-IV. All energies listed in this publication are in keV, and all branching ratios (BR) sum to unity. If there are spectra in the decay data file, the decay scheme is followed by tables of photon, particle, and characteristic radiation. For cases in which the multipolarities could be obtained from the file the tables also contain information on x-rays, conversion electrons, and Auger electrons. Associated with the photon and particle radiation tables are the appropriate average energies per decay for each type of radiation, including neutrino radiation

[en] Some remarks are submitted concerning the measurement of differential cross sections for threshold reactions which are used in fast-neutron dosimetry for fission reactors. The objective is to familiarize the reader with some of the problems associated with these measurements and, in the process, to explain why the existence of large discrepancies in the data sets for many of these reactions is not surprising. Limits to the accuracy which can be expected for these cross sections in the near future--using current technology and available resources--are examined in a general way and recommendations for improving the accuracy of the differential data base for dosimetry reactions are presented

[en] This report (Vol. 8) presents graphs of supplemental neutron-induced cross sections in the Experimental Cross Section Information Library (ECSIL) as of July 4, 1976. It consists of interactions where more than one data set is needed to show cross-section behavior. In contrast, Vol. 7 of this UCRL-50400 series consists primarily of interactions where a single data set contains enough points to show cross-section behavior. In Vol. 7 can be found the total, elastic, capture, and fission cross sections (along with the parameters anti ν, α, and eta). Volume 8 contains all other reactions. Data are plotted with associated cross-section error bars (when given) and compared with the Evaluated Nuclear Data Library (ENDL) as of July 4, 1976. The plots are arranged in ascending order of atomic number (Z) and atomic weight (A). Part A contains the plots for Z = 1 to 35; Part B contains the plots for Z greater than 35

[en] Short note

[en] New data on hadron-nucleus interactions are summarized, focusing on: estimation of the rate of energy loss of the incident hadron as it propagates through the target, and determining where the energy is depositied in central hadron-nucleus collisions. The present status of pA → p + X inclusive measurements is discussed. Measurements from visual detectors which allow investigation of global event properties are presented. Data taken from calorimeters, where one can trigger and measure transverse energy and energy flow over a given rapidity region, are discussed. 22 refs., 20 figs

[en] Research is concerned with nuclear reactions, nuclear structure, pion production in elementary collisions, symmetry tests, and searches for dibaryon structures. Increasing emphasis is being placed on fundamental problems relating to quantum chromodynamics. A list of publications is provided. 43 refs., 12 figs