Results 351 to 360 of about 2,001,633 (378)

Noncoplanarity in proton-proton bremsstrahlung

Physical Review C, 2001
Using the soft-photon approximation, we address the issue of the importance of noncoplanarity effects in proton-proton bremsstrahlung, We investigate the noncoplanar cross section as a function of the noncoplanarity angle (φ) over bar for the entire range of the photon polar angle psi(gamma).
B. F. Gibson, M.K. Liou, Yang Li, Robertus Timmermans   +3 more
openaire   +3 more sources

Proton Conduction in 2D Aza-Fused Covalent Organic Frameworks

Chemistry of Materials, 2019
This paper describes the first demonstration of a general concept for achieving facile proton conduction within a class of layered two-dimensional aza-fused π-conjugated covalent organic frameworks (COFs).
Zheng Meng, Aylin Aykanat, K. Mirica
semanticscholar   +1 more source

Collective proton transport with weak proton-proton coupling

Physical Review E, 2000
A mechanism based on the peculiar dynamical properties of the hydrogen bond is suggested to describe fast proton transfers in hydrogen-bonded chains with realistic (weak) intersite proton-proton interactions. For this purpose, a two-sublattice model is suggested and studied analytically that admits an exact soliton solution.
A. V. Zolotaryuk, Karl H. Spatschek, Michel Peyrard   +2 more
openaire   +3 more sources

High Proton Conductivity Achieved by Encapsulation of Imidazole Molecules into Proton-Conducting MOF-808.

ACS Applied Materials and Interfaces, 2019
Metal-organic frameworks (MOFs), as newly emerging materials, show compelling intrinsic structural features, e.g., the highly crystalline nature and designable and tunable porosity, as well as tailorable functionality, rendering them suitable for proton ...
Hong‐Bin Luo, Qiu Ren, Peng Wang, Jin Zhang, Lifeng Wang, X. Ren   +5 more
semanticscholar   +1 more source

Proton–proton correlations observed in two-proton radioactivity of 94Ag

Nature, 2006
The stability and spontaneous decay of naturally occurring atomic nuclei have been much studied ever since Becquerel discovered natural radioactivity in 1896. In 1960, proton-rich nuclei with an odd or an even atomic number Z were predicted to decay through one- and two-proton radioactivity, respectively.
H. Grawe, Marco La Commara, Mark Huyse, L. V. Grigorenko, Ivan Mukha, R. Kirchner, Z. Janas, Chiara Mazzocchi, E. Roeckl, L. Batist, Sam L Tabor, Piet Van Duppen, Andrey Blazhev, Andrey Blazhev, Joachim Döring   +14 more
openaire   +4 more sources

Theory of Proton-Proton Bremsstrahlung

Physical Review, 1966
The proton-proton bremsstrahlung cross section is derived to first order in the electromagnetic interaction and the nucleon-nucleon $t$ matrix. The cross section is expressed in terms of the nucleon-nucleon phase shifts and the quasi-phase parameters needed to describe $t$ off the energy shell. The formulas are given in a form suitable for calculation.
M.I. Sobel, Alan H. Cromer
openaire   +2 more sources

Proton-Proton Collisions

2016
This chapter is intended to give an overview of the basics of the description and simulation of proton-proton (pp) collisions. The terminology is introduced in Sect. 4.1. Section 4.2 contains a brief discussion of parton density functions and Sect. 4.3 introduces the basic concepts for the calculation of hadron–hadron cross sections.
openaire   +2 more sources

QCD in High-Energy Proton-Proton and Proton-Antiproton Collisions

1985
The experimental and theoretical investigation of nucleon-nucleon collisions at high energies allows to explore the structure of the nucleon by large momentum transfer (deep-inelastic) processes. In these lectures the structure of the nucleon from momentum scales Q > 1 GeV/c (
openaire   +3 more sources

Estimation of metabolite concentrations from localized in vivo proton NMR spectra

Magnetic Resonance in Medicine, 1993
S. Provencher
semanticscholar   +1 more source

The external proton beams and the proton‐proton experiments

AIP Conference Proceedings, 1980
The ZGS was one of the first accelerators in which extracted primary proton beams and experimental halls were part of the initial design. Special features incorporated into the ring made it possible to permanently position extraction magnets, and there was no need to plunge them as in other machines.
openaire   +2 more sources