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ABSTRACT NOT AVAILABL

Measurement of alpha‐widths in 16O relevant to astrophysics

Several different α‐transfer reactions, 12C→16O, have been studied at high bombarding energies with magnetic spectrometers. Line‐widths, α‐spectroscopic factors, Sα, and reduced α‐widths, γα2 and ϑα2, have been determined for levels in 16O, including several of importance in astrophysics.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/87457/2/752_1.pd

Antiproton annihilations in nuclei

Recent results from LEAR experiment PS187 are presented. Preliminary data for the inclusive production of ..pi../sup +/, K/sup +/, and p from the annihilation of 180 MeV antiprotpns in /sup 28/Si and /sup 238/U are compared with predictions of intranuclear cascade calculations. Proton and pion production data are well reproduced by the calculations, but kaon yields at low momenta appear to be strongly suppressed in the experimental data. 8 refs., 5 figs

Transverse energy distribution, charged particle multiplicities and spectra in 16^{16}O nucleus collisions

The HELIOS (High Energy Lepton and Ion Spectrometer) experiment, installed at the CERN Super Proton Synchrotron, proposes to examine in details the physical properties of a state of high energy created in nuclei by ultra-relativistic nucleus-nucleus collisions. It is generally believed that, at high densities or temperatures, a phase transition to a plasma of quark and gluons will occur. The dynamic of the expansion of such a plasma and its subsequent condensation into a hadron gas should markedly affect the composition and momentum distribution of the emerging particles and photons. The HELIOS experimental setup therefore combines 4..pi.. calorimetric coverage with measurements of inclusive particle spectra, two particle correlations, low and high mass lepton pairs and photons. The emphasis is placed on transverse energy flow (E/sub T/) measurements with good energy resolution, and the ability to trigger the acquisition of data in a variety of E/sub T/ ranges, thereby selecting the impact parameter or the violence of the collisions. This short note presents HELIOS results, for the most part still preliminary, on /sup 16/O-nucleus collisions at the incident energies of 60 and 200 GeV per nucleon. The E/sub T/ distributions from Al, Ag and W targets are discussed and compared to the associated charged particle multiplicities from W. Charged particle and (converted) photon spectra measured with the external magnetic spectrometer are compared for /sup 16/O + W and p + W collisions at 200 GeV per nucleon. 5 refs., 7 figs

Contribution to the Knowledge of the Natural History of the Marine Fish-ponds of Batavia

Volume: 2Start Page: 157End Page: 40

CONTRIBUTION TO THE KNOWLEDGE OF THE NATURAL HISTORY OF THE MARINE FISH-PONDS OF BATAVIA

ABSTRACT NOT AVAILABL

The Laboratory for Marine Investigations at Batavia: A New Tropical Marine Biological Station

abstract not availabl