Results 51 to 60 of about 55,721 (192)
Annalen der Physik, EarlyView.The BRST invariant Lagrangian of the gravitationally interacting U(1)$U(1)$ gauge theory, namely the Quantum GraviElectro Dynamics (QGED). The Yan–Mills theory with the Hilbert–Einstein gravitational Lagrangian, namely the Yang–Mills–Utiyama (YMU) theory, is defined and quantised using the standard procedure. The theory is perturbatively renormalisable,
Yoshimasa Kurihara
wiley +1 more source
Docking positrophilic electrons into molecular attractive potential of fluorinated methanes
, 2013 The present study shows that the positrophilic electrons of a molecule dock into the positron attractive potential region in the annihilation process under the plane-wave approximation.
Ma, Xiaoguang, Wang, Feng
core +2 more sources
Energetics of positron states trapped at vacancies in solids [PDF]
, 2007 We report a computational first-principles study of positron trapping at vacancy defects in metals and semiconductors. The main emphasis is on the energetics of the trapping process including the interplay between the positron state and the defect's ...
G. Kresse +7 more
core +2 more sources
Direct Decay of the Z^0 Boson into Ω_bcc and Ω_bbc Baryons [PDF]
فیزیک کاربردی ایرانElectron-positron annihilation experiments are crucial tools for testing the Standard Model due to the simplicity and clarity of the initial state.
tawfigh Osati
doaj +1 more source
Single-shot positron annihilation lifetime spectroscopy using a liquid scintillator
AIP Advances, 2021 Liquid scintillators provide a fast, single component response. However, they traditionally have a low flashpoint and high vapor pressure. We demonstrate the use of an EJ-309 scintillator (high flashpoint and low vapor pressure variant) to acquire single-
Joshua R. Machacek +2 more
doaj +1 more source
Journal of Applied Polymer Science, EarlyView.Dissolved hydrogen‐induced plasticization of polyamide 11 (PA11) detected as a decrease in flexural modulus (Ef) using Cyclic Three‐Point Bending (Cyc‐3PB). ABSTRACT The effect of dissolved hydrogen on polyamide 11 (PA11) after decompression from a 90 MPa hydrogen gas environment was investigated. Structural analyses using wide‐angle X‐ray diffraction (
Hiroaki Ono +6 more
wiley +1 more source
Second bound state of PsH [PDF]
, 2006 The existence of a second bound state of PsH that is electronically stable and also stable against positron annihilation by the normal 2gamma and 3gamma processes is demonstrated by explicit calculation.
A. I. Alekseev +8 more
core +3 more sources
Atomic ionization at annihilation of positrons emitted at β+-decay [PDF]
Ядерна фізика та енергетика, 2011 Atomic ionization at annihilation of positron with another electron of daughter's atom at +-decay is studied. Processes of the different atomic shells ionization at annihilation of positron, emitted at +-decay, with K-electron of daughter's atom are ...
S. N. Fedotkin
doaj
Distribution of Positron Annihilation Lifetime Components
مجلة بغداد للعلوم, 2008 The intensities of the positron annihilation lifetime components are shown to be related to the free volume model, and the theoretical value of the ratio between the singlet to the triplet state intensities, described by the ratio η, is shown to follow ...
Ahmed Abdul-Razzaq Selman +1 more
doaj +1 more source
ChemBioChem, EarlyView.Radiopharmaceuticals enable precise cancer diagnosis and targeted therapy by combining radioactive isotopes with carrier molecules. This review summarizes advances from 2014 to 2025, emphasizing probe design, click chemistry, novel targets, and nanodelivery systems.
Mohd Sayeed Shaikh +7 more
wiley +1 more source