Results 61 to 70 of about 144,387 (227)
Pair Annihilation Effects on Surface Ion Cyclotron Wave in Semi-bounded Electron-positron-ion Plasmas [PDF]
, 2008 The electron-positron pair annihilation effects on the surface ion cyclotron wave are investigated in magnetized electron-positron-ion plasmas in atmospheres of neutron stars.
Jung, Young-Dae +3 more
core
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
Seeing radiation: Applications of an imaging survey meter in radiation oncology
Journal of Applied Clinical Medical Physics, Volume 27, Issue 10, October 2026.Abstract Background and purpose Radiation shielding surveys require location and evaluation of radiation hotspots in shielding barriers. This process is normally done by using a conventional survey meter and slowly moving the survey meter manually across the face of the barrier.
Patrick N. McDermott +8 more
wiley +1 more source
Positron Annihilation Spectroscopy in Materials and Technical Details of Measurement Systems [PDF]
فصلنامه علوم و فناوری فضایی, 2013 Being a very powerful method, Positron Annihilation Spectroscopy (PAS) has been widely used for investigation of defects type and concentration in materials in recent years.
A. A. Mehmandoost-Khajeh-Dad +2 more
doaj
Positron Spectroscopy of Nanodiamonds after Hydrogen Sorption
Nanomaterials, 2018 The structure and defects of nanodiamonds influence the hydrogen sorption capacity. Positronium can be used as a sensor for detecting places with the most efficient capture of hydrogen atoms.
Lyudmila Nikitina +4 more
doaj +1 more source
Powers That Be: An Adventure in Metaphysics
Philosophical Investigations, Volume 49, Issue 4, Page 343-348, October 2026.ABSTRACT This paper is an investigation into the increasingly popular trend amongst philosophers on the metaphysics of powers, exemplified by the statement: ‘To be real is to possess a power to affect (or to be affected by) other things’. First, I briefly trace the history of this idea (from the Eleatic dialectic of ancient times to present day quantum
David Rozema
wiley +1 more source
Algorithm for Shifting Positron Annihilation Spectra [PDF]
, 2001 We present a simple procedure which allows us to shift the positron annihilation spectra, e.g., the Doppler broadening spectrum of the annihilation line.
Polak, A., Dryzek, J.
core +1 more source
Hadron pair production in semi-inclusive electron positron annihilation process at twist-4
European Physical Journal C: Particles and Fields, 2022 Fragmentation functions are important quantities in describing the hadronization process in high energy reactions. They can induce various azimuthal modulations which can be measured to reveal correlations between transverse momenta and polarizations ...
Weihua Yang
doaj +1 more source
Photophysics of Distinguished Defect States in Bi2O2Se Thin Films
Nanophotonics, Volume 15, Issue 17, 11 September 2026.An experimental comparison of CVD‐grown Bi2O2Se thin film and films prepared by OTG solution method with similar electrical properties reveals the defects mechanisms in Bi2O2Se thin films via OTG solution method, offering defect engineering strategies for high‐power electronics.
Xiaoran Niu +11 more
wiley +1 more source
Технологія та конструювання в електронній апаратурі, 2006 Nanoporous spinel‑type MgAl2O4 ceramics sintered at 1100 and 1400 °C, considered as promising materials for humidity sensors, were investigated using positron annihilation lifetime spectroscopy (PALS). It is demonstrated that PALS can be applied to study
H. I. Klym +5 more
doaj