[en] A detailed estimate is presented of the possible uncertainty range for the neutrino flux from a standard solar model. Using present estimated errors in the key input parameters, detailed solar models are calculated to give an uncertainty in the theoretical nu_e capture rate in both the on-going ³⁷Cl experiment and the proposed experiment using ⁷¹Ga. The uncertainty in capture rate is investigated by considering individual parameter variations about a mean model, by simultaneously varying several key parameters to yield upper and lower limits, and by a Monte Carlo method

[en] It is possible to measure the deep-inelastic spin-dependent structure functions g₁/sup p/(x) and g₁/sup n/(x) for the proton and neutron using internal polarized hydrogen, deuterium, and ³He targets of polarization 50% and thickness 10¹⁴ to 10¹⁵ cm^-2 and the 60 mA longitudinally polarized 30 GeV electron beam in the HERA electron storage ring. The measurement of the deep-inelastic spin-structure of both isospin states of the nucleon at the same kinematics and using the same apparatus allows the Bjorken sum rule to be experimentally checked. In addition, it uniquely constrains the spin distribution of the u and d quarks as a function of x in any model of the nucleon. Possible target and detector configurations are described and an estimate of the accuracy of such a measurement is presented

[en] A review of the experimental nuclear physics data that is necessary in the calculation of the solar neutrino flux is presented. The emphasis is on recent experiments which have attempted to reduce the uncertainties in the relevant astrophysical S-factors. The effects of the remaining uncertainties in the experimental input is discussed for three solar neutrino detectors: ³⁷Cl, ⁷¹Ga, and ⁸¹Br

[en] The preparation of a ⁷Be target for nuclear reaction studies by use of the molecular plating method is described. The production of the ⁷Be via the ⁷Li(p,n)⁷Be reaction and the chemical separation and purification process are also discussed. (orig.)

[en] The phenomena of Color Transparency has recently attracted a significant amount of theoretical (and experimental) interest. With an increase in the CEBAF beam energy to 8 - 10 GeV, important new data on the process could become available. The present status of the experiments and future prospects at CEBAF are discussed

[en] The quasielastic (e,e'p) reaction has been studied with ²H, C, Fe, and Au nuclei at momentum transfers Q²=1, 3, 5, and 6.8 (Gev/c)². The nuclear transparency is extracted and compared with calculations based on perturbative QCD that predict a significant increase in transparency with momentum transfer, a phenomenon known as Color Transparency. No statistically significant rise is seen for any of the nuclei studied. copyright 1995 American Institute of Physics

[en] The design principles of nonimaging optics are applied to ultracold neutrons (UCN). In particular a vertical compound parabolic concentrator (CPC) that efficiently redirects UCN vertically into a bounded spatial volume where they have a maximum energy mga that depends only on the initial phase space cross sectional area πa² creates a spectrometer which can be applied to neutron lifetime and gravitational quantum state experiments. -- Highlights: • Nonimaging optics is applied to ultracold neutrons. • A novel ultracold neutron spectrometer is discussed. • New uses may include a neutron lifetime experiment

[en] A general framework for applying radiative corrections to (e,e prime p) coincidence reactions at GeV energies is presented, with special emphasis to higher-order Bremsstrahlung effects, radiation from the scattered hadron, and the validity of peaking approximations. The sensitivity to the assumptions made in practically applying radiative corrections to (e,e prime p) data is extensively discussed. The general framework is tested against experimental data of the ¹H(e,e prime p) reaction at momentum transfer values larger than 1.0 (GeV/c)²,where radiative processes become a dominant source of uncertainty. The formulas presented here can easily be modified for any other electron-induced coincidence reaction

[en] A review is given of charged-particle nuclear reactions in stars. Topics covered include helium burning, nucleosynthesis, and the solar neutrino problem

[en] ¹⁰⁶In has been studied via the reaction ¹⁰⁶Cd(p,nγ)¹⁰⁶In in the energy range E/sub p/ = 7--9 MeV. In-beam γ-ray excitation functions, γ-γ coincidence measurements, and β⁺-delayed γ-ray excitation functions have been used to identify thirteen levels in ¹⁰⁶In. From this new level scheme the energy separation of the high-spin ground state and the low-spin isomer has been determined to be 28.6 +- 0.5 keV. The threshold energy of the strongest low-lying γ-ray transition yields a mass excess for ¹⁰⁶In of -80601 +- 15 keV. Spins for some states are suggested by comparing the excitation functions to Hauser-Feshbach calculations. In-beam γ-ray excitation functions for the ¹⁰⁸Cd(p,nγ)¹⁰⁸In reaction give a mass excess for the 3⁺ β⁺-decaying state in ¹⁰⁸In of -84018 +- 12 keV. The systematics of odd-odd In nuclei are discussed in a j-j coupling model