J. Joseph Coyne

Interaction of neutrons and secondary charged particles with tissue: secondary particle spectra

Theoretical calculations have been made of the secondary particle spectra for p, d, α,

Glueballs: Their Spectra, Production and Decay

{}^{9}{\rm Be},{}^{11}{\rm B},{}^{12,13,14}{\rm C},{}^{14,16}{\rm N}

Glueballs: Their experimental signature

, and16 O produced ...

E (1440): GLUEBALL OR QUARKONIUM?

What is a glueball? It is a colorless and flavorless composite of two or more gluons whose existence is implied in quantum chromodynamics (QCD) [1–3]. That we are even considering such an object today is a true tribute to serendipity. Let us see why I say that.

Wn and Neutron Kerma for Methane-Based Tissue-Equivalent Gas

Abstract We study hadrons with a 2-gluon valence component, emphasizing states not found in the quark model. We predict that 0 ++ , 0 −+ , 1 ++ , and the particularly interesting 1 −+ glueballs will be narrow, with widths ranging from a few MeV to less than one MeV, and that spin 0 glueballs will mimic ss quarkonium states in their decay. We also comment on photonic couplings.

Effects of track structure on neutron microdosimetry and nanodosimetry

Abstract The most likely assignment of the E(1440) is that of an ordinary ss, L = 1, J PC = 1 ++ meson, rather than a flavor singlet meson or a J PC = 0 −+ or 1 ++ glueball.

Systematics of Alpha-Particle Energy Spectra and Lineal Energy (Y) Spectra for Radon Daughters

Homogeneous tissue-equivalent ionization chambers containing a methane-based gas mixture are widely used to determine the absorbed dose of neutrons employed in radiobiology and radiotherapy. Conversion of the measured ionization charge to the absorbed dose requires knowledge of

Alpha Particle Spectra and Microdosimetry of Radon Daughters

W_{{\rm n}}

Glueball decay widths and glueball dominance of quarkonium decays

, the mean energy expended to form an ion pair in the gas by the initial spectra of secondary charged particles produced by the neutrons. This report discusses the computed charged particle spectra in the gas and the relative kermas contributed by the various types of charged particles. These spectra are combined with an evaluation of the available experimental data on W for the secondary particles to compute

Neutron Energy Deposition on the Nanometer Scale

W_{{\rm n}}