Commit Graph

12 Commits

Author SHA1 Message Date
a427157180 Added Solt's ZF depolarization function to the libZFRelaxation
While doing that I realized that all LF functions within libLFRelaxation cannot be used at the moment
with a parallelized musrfit installation. Therefore, the built-in functions should be used for now.
One day this should be fixed ...
2011-06-02 15:36:43 +00:00
56799142dc Restructured the interdependencies within the BMWlibs (maybe other commits will follow) 2011-03-21 14:33:34 +00:00
aaa0638729 Restructured the interdependencies within the BMWlibs (maybe other commits will follow) 2011-03-20 18:03:49 +00:00
032ce4a1e4 - Extended the usage of xml-startup files in some plugin libraries and renamed the file itself.
- Added some documentation to libLFRelaxation which in the present stage is mainly used for testing purposes.
2011-03-16 16:43:13 +00:00
233ca10dff - Removed the extensions of the external libraries in the test files.
ROOT is anyway checking multiple extensions for dynamic libraries, therefore leaving them out yields platform-independent msr files.

- Minor changes in libTFitPofB

- Added a user function for Uemura's ZF/LF dynamical spin-glass relaxation function
  see, e.g. Y.J. Uemura et al., Phys. Rev. B 31, 546-563 (1985)
  or Y.J. Uemura, Hyperfine Interact. 8, 739 (1981)

  This yields an overall Lorentzian field distribution with motional narrowing.
  However, the present implementation is at best some design study:
  The Lorentzian distribution of width "a" is modeled by Gaussian distributions of widths "sigma" from 0 to infinity.
  Some "resonable cut-offs" would be: 0.1*a < sigma < 10000*a
  Due to finite memory and computing power, in the present version these cut-offs are: 0.1*a < sigma < 40*a
  This yields depolarization functions overall similar to those in Uemura's articles.
  However, due to the low cut-off the first derivative of the depolarization function is zero in the limit t->0
  (what should not be the case for a true Lorentzan).
  Furthermore, the calculation is rather slow and the resulting functions should only be regarded as crude approximations.
  Therefore, at the moment this is far from being of practical use in analyzing experimental data.
2011-03-12 21:13:51 +00:00
f4d6e349fe added the option to split a user function into a global and run-block related part (see MUSR-134) 2010-11-10 13:13:00 +00:00
440d22bc99 * Changed the exit condition for a few external classes in case the xml-file is not found.
Until now the program terminated with a segmentation fault which was not very user friendly...

* Got rid of a strange construction in the TRIM.SP handler (vector<pair> -> map)
2010-06-20 10:34:49 +00:00
ed7a15f025 Further steps to OS independence (at least Linux, Mac OS X, Cygwin) of musrfit 2010-01-10 12:52:14 +00:00
ccaba04d51 Fixed a Bessel-function-bug in the class calculating LF relaxation functions through Laplace transforms 2009-10-17 19:14:10 +00:00
e3ac790371 PSIBIN-changes... 2009-09-20 11:35:01 +00:00
f9971d4858 Added semi-analytical approximations to the dynamical Lorentz LF class. 2009-02-04 15:07:45 +00:00
943494f4dc Added a possible userFcn-implementation of Gaussian and Lorentzian static and dynamic LF relaxation functions to musrfit. Read the README 2008-12-05 15:43:47 +00:00