Results 261 to 270 of about 1,597,523 (296)

Measurements of neutral helium density in helicon plasmas

Review of Scientific Instruments, 2010
Laser-induced-fluorescence (LIF) is used to measure the density of helium atoms in a helicon plasma source. For a pump wavelength of 587.725 nm (vacuum) and laser injection along the magnetic field, the LIF signal exhibits a signal decrease at the Doppler shifted central wavelength. The drop in signal results from the finite optical depth of the plasma
Saeid, Houshmandyar, Stephanie H, Sears, Saikat Chakraborty, Thakur, Jerry, Carr, Matthew E, Galante, Earl E, Scime   +5 more
openaire   +2 more sources

Risk-Neutral Densities and Catastrophe Events

2012
In this research, we analyze the impact of catastrophe events on riskneutral densities which can be implied from European option markets. As catastrophe events we consider the destruction of the nuclear power plant at Fukushima and the downgrading of U.S. sovereign debt in 2011.
Herold, Michael, Muck, Matthias
openaire   +1 more source

Absorption and fixation times for neutral and quasi-neutral populations with density dependence

Theoretical Population Biology, 2008
We study a generalisation of Moran's population-genetic model that incorporates density dependence. Rather than assuming fixed population size, we allow the number of individuals to vary stochastically with the same events that change allele number, according to a logistic growth process with density dependent mortality. We analyse the expected time to
Parsons, Todd L., Quince, Christopher, Plotkin, Joshua B.   +2 more
openaire   +4 more sources

Neutral Atmosphere Density Monitoring System

Bulletin of the AAS, 2023
Kerry Nock, Thomas Berger, Eric Sutton, Jeffrey Thayer, Marcin Pilinski, Kim Aaron, Mark Warnecke   +6 more
openaire   +1 more source

Neutral Density Filters of Chromel A1

Journal of the Optical Society of America, 1947
A short review of the available neutral density filters is given, with emphasis placed on the evaporation of Chromel A to form a film of any practical density that has neutral transmission throughout the visible and into the infra-red and ultraviolet regions.
openaire   +1 more source

Stable PtNb-Nb2O5 heterostructure clusters @CC for high-current-density neutral seawater hydrogen evolution

Applied Catalysis B: Environmental, 2022
Jianping Lai
exaly  

Recent advances in electrocatalysts for neutral and large-current-density water electrolysis

Nano Energy, 2021
Yunhui Huang, jing fu
exaly  

Engineering solid–liquid-gas interfaces of single-atom cobalt catalyst for enhancing the robust stability of neutral Zn-air batteries under high current density

Chemical Engineering Journal, 2022
Huan-Lei Wang, Minghua Huang, Arafat Toghan   +2 more
exaly  

All-solid-state Ti3C2Tx neutral symmetric fiber supercapacitors with high energy density and wide temperature range

Journal of Colloid and Interface Science, 2023
Xuexia He, Zong-Huai Liu
exaly  

Neutral Density Filters

2020
openaire   +1 more source