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The CCP3 software library contains a variety of packages for the calculation of surface properties and the analysis of surface science experiments. CCP3 is actively involved in negotiating access to new codes from leading research groups around the world, and hence the library is constantly expanding. Users should also check the SRRTNet Program Library The following codes are currently available. They are all supported by CCP3 and are freely available to UK academic groups. To obtain copies of these codes, including full documentation, e-mail your request to ccp3@dl.ac.uk Analysis of Experimental DataLow Energy Electron DiffractionDL-LEED Full dynamic LEED analysis. New codes developed in Fortran 90. Beta-test version now available.DL-ATLEED Analysis of LEED I-V data using the tensor LEED method. Symmetrised versions developed by Michel Van Hove, LBL, Berkeley, California are also available. (Approximations made are MTO, tensor LEED) Surface X-Ray DiffractionROD Analysis of surface X-ray diffraction data. Code developed by Elias Vlieg of the University of Nijmegen. It is currently maintained by the ESRF.There is currently an ongoing CCP3 project to fully integrate the ROD code into the DLV package. Photoelectron DiffractionMSCD Analysis of scanned energy or scanned angle photoelectron diffraction data. Code developed by Michel Van Hove, LBL, Berkeley, CaliforniaPAD Analysis of photoelectron and auger electron diffraction via the use of full multiple scattering cluster calculations. Codes developed by Dilano Saldin's group at the University of Milwaukee, Wisonsin Holographic Inversion Codes for the analysis of photoelectron and x-ray diffraction data via holographic inversion. Codes developed by Michel Van Hove, LBL, Berkeley, California X-ray AdsorptionFEFF Multiple scattering calculations of EXAFS and XANES spectra. These codes have been developed at the University of Washington by J. J. Rehr and colleagues and are available under licence from the University of Washington Office of Technology Transfer for a nominal fee to academic users.FDMNES XANES-DAFS simulation program from Yves Joly's group at the CNRS, Grenoble EXCURV Supports single and multiple scattering analysis of EXAFS data and has been developed as a CCP3 Flagship Project. Within the single scattering mode the package reports the radius of shells of atoms surrounding the emitter, the Debye-Waller factors, and the occupation numbers of the shells. In multiple scattering mode a full three dimensional structural determination is performed. Over 500 licences for DL_EXCURV have been issued since its release in 2005. Ongoing support is provided for users of the code, as well as handling licence requests. The code is fully integrated to the DLV package. CTM4XAS Charge Transfer Multiplet Program The Charge Transfer multiplet program is a semi-empirical program that includes explicitly the important interactions for the calculation of L edge spectra. PhotoemissionCasaXPS Offers powerful analysis techniques for both spectral and imaging data. The system originally designed for XPS and Auger data now offers features covering a wide range of analytical techniques including ToF SIMS, dynamic SIMS and many more. Phase ShiftsDL_PHASE Many of the above codes require phase shifts as input. This code (based on Desclaux's relativistic atomic code) will generate phase shifts for the above application packages.Basic Electronic StructureThe ab initio calculation of surface properties has added greatly to our understanding of surface phenomena and our ability to analyse complex experimental data.CRYSTALCRYSTAL is a general purpose electronic structure code for solids, surfaces and molecules. The crystal package performs ab initio calculations of the ground state energy, electronic wave functions and properties of periodic systems. Hartree Fock or DFT calculations can be performed. The package uses local Gaussian basis functions and has been applied to a wide range of materials. CRYSTAL09 has recently been released, and includes several new functionalities. A growing number of projects of interest to the CCP3 community are concerned with excited state and dynamical properties. The implementation of density functional perturbation theory and double perturbation theory is an essential first step for describing excited states using time dependent density functional theory (TDDFT) and is currently being developed by Dr. Leonardo Bernasconi at STFC Rutherford Appleton Lab. There is also a need for modules to facilitate the calculation of electronic transport in low dimensional and nanoscale structures. An interface to the WanT code that takes as input the local wavefunctions generated by CRYSTAL to be used to build planar Green functions for transport calculations is being prepared for release. Further information is available on the CRYSTAL homepage.CRYSTAL09 is now available online. The new version is fully supported by the DLV v3.0 package. CASTEPCCP3 users interested in performing ab initio calculations of surface properties may also be interested in the CASTEP program which has been successfully applied to a huge range of problems and is available free to UK academic groups from UKCPVisualization and InterfacingDLVisualize is a state of the art package for the visualisation of material structures and properties developed by Dr Barry Searle at Daresbury. DLVisualize interfaces to several CCP3 software codes. Recently released DLV v3.0 includes support for CRYSTAL09 and for parallel transition state searching, and a new interface to the glancing incidence surface X-ray diffraction code ROD has been developed and released. There were over 700 downloads of V2.5. More information is available at the DLV home page.v3.0 of DLV
is now available and provides an interface to
CRYSTAL09
Other Sources of Software
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