Results 21 to 30 of about 3,340,845 (318)
Relaxion stars and their detection via atomic physics [PDF]
Communications Physics, 2019 The cosmological relaxion can address the hierarchy problem, while its coherent oscillations can constitute dark matter in the present universe. We consider the possibility that the relaxion forms gravitationally bound objects that we denote as relaxion ...
A. Banerjee +4 more
semanticscholar +1 more source
Active Collimator for the BGO Anti-Compton Shield of the HPGe Clover Detector [PDF]
EPJ Web of Conferences, 2023 An active collimator has been designed to replace the heavy metal collimator of the BGO anti-Compton shield to improve the performance of the hybrid Indian National Gamma Array (INGA) at TIFR, Mumbai.
Das Biswajit +12 more
doaj +1 more source
Improving Efficiency of Sympathetic Cooling in Atom-Ion and Atom-Atom Confined Collisions [PDF]
Phys. Rev. A 103, 053109 (2021), 2021 We propose a new way for sympathetic cooling of ions in an electromagnetic Paul trap: it implies the use for this purpose of cold buffer atoms in the region of atom-ion confinement-induced resonance (CIR). The problem is that the unavoidable micromotion of the ion and the long-range nature of its interaction with the environment of colder atoms in a ...
arxiv +1 more source
Reports on progress in physics. Physical Society, 2022 Since the first demonstration of the generation of attosecond pulses (1 as = 10−18 s) in the extreme-ultraviolet spectral region, several measurement techniques have been introduced, at the beginning for the temporal characterization of the pulses, and ...
R. Borrego-Varillas +2 more
semanticscholar +1 more source
Magnetic field stabilization system for atomic physics experiments. [PDF]
Review of Scientific Instruments, 2018 Atomic physics experiments commonly use millitesla-scale magnetic fields to provide a quantization axis. As atomic transition frequencies depend on the magnitude of this field, many experiments require a stable absolute field.
B. Merkel +6 more
semanticscholar +1 more source
Factors modulating 99mTc‐MAA planar lung dosimetry for 90Y radioembolization
Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022 Abstract Purpose To investigate the accuracy and biases of predicted lung shunt fraction (LSF) and lung dose (LD) calculations via 99mTc‐macro‐aggregated albumin (99mTc‐MAA) planar imaging for treatment planning of 90Y‐microsphere radioembolization.
Benjamin P. Lopez +4 more
wiley +1 more source
State-selective Charge Exchange in 19.5–100 keV amu−1 O6+ Collision with He and H2
The Astrophysical Journal Supplement Series, 2023 The cross sections of state-selective charge exchange (CX) between highly charged ions and neutrals are important for modeling extreme ultraviolet and soft X-ray emissions in many astrophysical objects with hot plasma impacting cold media.
T. Cao +16 more
doaj +1 more source
Thermalization of a Trapped Single Atom with an Atomic Thermal Bath [PDF]
Applied Sciences. 2021; 11(5):2258, 2021 We studied a single atom trapped in an optical tweezer interacting with a thermal bath of ultracold atoms of a different species. Because of the collisions between the trapped atom and the bath atoms, the trapped atom undergoes changes in its vibrational states occupation to reach thermal equilibrium with the bath.
arxiv +1 more source
Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022 Abstract Entry into the field of clinical medical physics is most commonly accomplished through the completion of a Commission on Accreditation of Medical Physics Educational Programs (CAMPEP)‐accredited graduate and residency program. To allow a mechanism to bring valuable expertise from other disciplines into clinical practice in medical physics, an “
Joann I. Prisciandaro +6 more
wiley +1 more source
Dipolar physics: a review of experiments with magnetic quantum gases [PDF]
Reports on progress in physics. Physical Society, 2022 Since the achievement of quantum degeneracy in gases of chromium atoms in 2004, the experimental investigation of ultracold gases made of highly magnetic atoms has blossomed.
L. Chomaz +5 more
semanticscholar +1 more source