14 research outputs found
明人“传奇”称名的观念基础及其渊源
A chemically selective laser ion source has been used in a -decay study
of heavy Ag isotopes into even-even Cd nuclides. Gamma-spectroscopic
techniques in time-resolving event-by-event and multiscaling modes have
permitted the identification of the first 2 and 4 levels in
Cd, Cd, and tentatively the 2 state in
Cd. From a comparison of these new states in Cd with the
and level systematics of Pd and Te
isotopes and several recent model predictions, possible evidence
for a weakening of the spherical neutron-shell below double-magic
Sn is obtained
MCMC for Wind Power Simulation
This paper contributes a Markov chain Monte Carlo (MCMC) method for the direct generation of synthetic time series of wind power output. It is shown that obtaining a stochastic model directly in the wind power domain leads to reduced number of states and to lower order of the Markov chain at equal power data resolution. The estimation quality of the stochastic model is positively influenced since in the power domain, a lower number of independent parameters is estimated from a given amount of recorded data. The simulation results prove that this method offers excellent fit for both the probability density function and the autocorrelation function of the generated wind power time series. The method is a first step toward simple stochastic black-box models for wind generation.Electrical Sustainable EnergyElectrical Engineering, Mathematics and Computer Scienc
Voltage Source Converter (VSC) HVDC for Power Transmission - Economic Aspects and Comparison with other AC and DC Technologies
status: publishe
Beta Decay of Tc to Ru
The -decay of the very neutron-rich Tc nucleus
has been observed. A partial decay scheme of Ru is presented,
complementing the high-spin levels earlier reported in spontaneous
fission work
Shape coexistence near the double-midshell nucleus Rh
The decay of Ru obtained from fast on-line chemical and
mass separation has been investigated by -- and
- coincidence techniques. Earlier spin and
parity assignments of Rh levels based
on extrapolations of level systematics are confirmed. In particular, the
K=1/2 intruder band is supported by the hindrance of E2 transitions
between deformed and spherical states and
enhancement of intraband E2 transitions.
The excitation energies
of intruder band members in Rh isotopes
show a minimum at Rh, with two neutrons less than
Rh at the N=66 midshell. This trend,
which differs from the one in the higher-Z neighbouring
elements Ag and Cd with minima at N=66, follows the evolution of
deformation observed in the lower-Z elements Ru and Mo