Re: [Wien] Effect of a finite nucleus on electron density at the nucleus

2014-01-17 Thread Stefaan Cottenier
Clearly, for isomer shifts it might be that the problem is fixed by taking an appropriate alpha when converting into mm/s. I share this opinion. The density at the first mesh point is probably quite 'wrong', but roughly by the same factor. And as isomer shifts are calibrated against a few ex

Re: [Wien] Effect of a finite nucleus on electron density at the nucleus

2014-01-17 Thread Peter Blaha
For hyperfine fields we follow Bluegels work and average the spin density as mentioned below. However, I'm not aware about a similar argument for isomer shifts (and I'm not familiar with electron capture). Clearly, for isomer shifts it might be that the problem is fixed by taking an appropriat

Re: [Wien] Effect of a finite nucleus on electron density at the nucleus

2014-01-17 Thread pieper
I am curious about Peter's answer: I would have expected that the problem of nuclear decay through electron capture is very closely related to the one of calculating hyperfine parameters like isomer shift or hyperfine field. At first sight the calculation of these parameters suffers from the

Re: [Wien] Effect of a finite nucleus on electron density at the nucleus

2014-01-17 Thread Peter Blaha
In principle you are absolutely right. The question is only, for wich property does it really matter. At the moment I do not have plans to put a finite nucleus into the code myself. On 01/17/2014 01:03 PM, Amlan Ray wrote: Dear Prof. Blaha, I use WIEN2K code for calculating electron density

[Wien] Effect of a finite nucleus on electron density at the nucleus

2014-01-17 Thread Amlan Ray
Dear Prof. Blaha, I use WIEN2K code for calculating electron density at the nucleus to determine the change of electron capture nuclear decay rate in different environments. WIEN2K uses a point nucleus and I use the value of the electron density at the first mesh point as given by the code. I am