Results 101 to 110 of about 121,681 (264)
Abstract Understanding factors that might contribute to sustained moderate‐to‐vigorous intensity physical activity (MVPA) after the initial start of participation is important. The purpose of this study was to examine the changes in PA habit and identity, two constructs purported to drive behavioral maintenance, among parents of young (< 13 years of ...
Ryan E. Rhodes+5 more
wiley +1 more source
Value of the Axial-Vector Coupling Strength in β and ββ Decays: A Review
In this review the quenching of the weak axial-vector coupling strength, gA, is discussed in nuclear β and double-β decays. On one hand, the nuclear-medium and nuclear many-body effects are separated, and on the other hand the quenching is discussed from
Jouni T. Suhonen
doaj +1 more source
Capture rate and neutron helicity asymmetry for ordinary muon capture on hydrogen
Applying heavy-baryon chiral perturbation theory to ordinary muon capture (OMC) on a proton, we calculate the capture rate and neutron helicity asymmetry up to next-to-next-to-leading order.
A. Halpern+28 more
core +1 more source
On the capture of muons in atoms
Abstract In previous calculations on the capture of negative muons in atoms we used the average energy loss per unit path length as a frictional force in the classical equations of motion. In the present note it is shown that the rare events where the muon, because of its high velocity in the inner parts of the atom, loses an energy which is larger ...
Petr Vogel, V. Akylas, A. Winther
openaire +2 more sources
Abstract Negative muon capture in 28Si was used to determine the angular correlation between the neutrino and the 1229 keV γ-ray from the de-excitation of the 2201 keV 1+ level in 28Al. To suppress backgrounds in the HPGe detectors, a coincidence was required with the 942 keV γ-ray in the de-excitation cascade detected in a NaI array.
David F. Measday+8 more
openaire +2 more sources
On Muon Capture in Heavy Nuclei [PDF]
The theory of the Primakoff plot is developed in a simple way. Corrections advocated byKlein andWolfenstein are shown to be absent when reasonable correlation functions, such as those of the ideal Fermi gas, are used. However, development of the gas model throws doubt on the accuracy of the theory.
J. S. Bell, J. Løvseth
openaire +2 more sources
The Analysis of Vibrational Spectra: Past, Present and Future
Vibrational spectroscopy started in the 1900s and has evolved ever since. Current analysis methods are largely based on density functional theory. In the future more complex methods of obtaining spectra will require another level of sophistication for their analysis. Abstract Vibrational spectroscopy can be said to have started with the seminal work of
Stewart F. Parker
wiley +1 more source
Helical channel design and technology for cooling of muon beams
Novel magnetic helical channel designs for capture and cooling of bright muon beams are being developed using numerical simulations based on new inventions such as helical solenoid (HS) magnets and hydrogen-pressurized RF (HPRF) cavities. We are close to
Derbenev, Y. S.+2 more
core +1 more source
Abstract The total muon capture rate in 40Ca leading to 40K is calculated in the hole-particle model. For the Goldberger-Treiman value of gP/gA, the result is only slightly larger than the available experimental value. The influence of second class terms is then considered and the variation of total rate with respect to tensor coupling constant is ...
N. Vinh Mau, A. Bouyssy, M. Castaignet
openaire +2 more sources
In this paper, the interactions of low-energy muons (E < 10 MeV) with natural silicon, the basic material of microelectronics, are studied by Geant4 and SRIM simulation.
Jean-Luc Autran, Daniela Munteanu
doaj +1 more source