|Wednesday 20 June 2018|
|Events for day: Wednesday 01 March 2017|
Conference Hall, Farmanieh Building (1st floor) ...
11:00 - 12:00 Computational nanoscience biweekly journal club
Challenges for Density Functional Theory
Challenges for Density Functional Theory ...
13:30 - 15:00 Weekly Seminar
A semi-empirical model of the magnetic braking of solar-type stars
We aim to develop new angular momentum evolution models for stars with masses of 0.5 to 1.6 M? and from pre-main sequence through the end of their main sequence lifetime with the aid of the most recent advances in the field. The parametric models include magnetic braking based on numerical simulations of magnetized stellar winds, mass-loss rate prescription, core-envelope decoupling as well as disk locking phenomenon. We have also accounted for recent developments in modeling dramatically weakened magnetic braking in stars more evolved than the Sun. We fit the free parameters in our model by comparing model predictions to rotational distribut ...
15:00 - 16:00 Weekly Seminar
Smith-Purcell Free Electron Laser
PARTICLES AND ACCELERATORS
Today, there is a region of the spectrum that is not well served by practical sources. This region is called the terahertz (THz) gap because it lies between the fastest available transistors at around 0.5 THz and the lowest frequency conventional lasers around 30 THz. The lack of sources in this region is not due to a lack of applications for THz light, as there are many materials (including water) that have interesting dielectric properties at THz frequencies. This talk concerns the theory of one compact source of THz radiation, the Smith-Purcell free-electron laser (SPFEL), and the application of THz radiation.
Larak Sem ...