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* arising out of the use of or inability to use software, even if the |
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* University of Notre Dame has been advised of the possibility of |
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* such damages. |
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* |
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* BondOrderParameter.hpp |
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* OOPSE-4 |
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* |
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* Created by J. Daniel Gezelter on 09/26/06 |
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* @author J. Daniel Gezelter |
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* @version $Id: BondOrderParameter.hpp,v 1.14 2006-09-26 16:08:44 gezelter Exp $ |
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* |
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*/ |
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#ifndef APPLICATIONS_STATICPROPS_BONDORDERPARAMETER_HPP |
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#define APPLICATIONS_STATICPROPS_BONDORDERPARAMETER_HPP |
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#include "selection/SelectionEvaluator.hpp" |
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#include "math/Wigner3jm_interface.h" |
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namespace oopse { |
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< |
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/** |
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* @class BondOrderParameter |
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* @brief Bond Order Parameter |
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* |
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* Computes orientational bond order parameters as outlined in: |
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* |
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* "Bond-orientaional order in liquids and glasses," by |
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* P. J. Steinhart, D. R. Nelson, and M. Ronchetti, |
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* Phys. Rev. B, 28, 784 (1983). |
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* |
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* A somewhat more useful reference which has formulae for these order |
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* parameters for individual atoms is: |
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* |
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* "Numerical calculation of the rate of crystal nucleation in a |
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* Lennard-Jones system at moderate undercooling," by |
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* Pieter Rein ten Wolde, Maria J. Ruiz-Montero, and Daan Frenkel, |
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* J. Chem. Phys. 104, pp. 9932-9947 (1996). |
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* |
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* Note that this version uses a single cutoff radius to decide |
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* membership in the list of neighbors, and does not have use a |
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* distance-dependent weighting as used in the second reference above. |
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* |
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* The selection script can be utilized to look at specific types of |
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* central atoms. A dynamic selector can also be utilized. By default, |
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* this class computes the Q_{l} and \hat{W}_{l} parameters up to l = 12. |
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* The completed configurational averages of these values as |
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* well as the distributions of atomic q_{l} and \hat{w}_{l} values |
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* are then placed in .boq and .bow files. |
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*/ |
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class BondOrderParameter : public StaticAnalyser{ |
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public: |
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BondOrderParameter(SimInfo* info, const std::string& filename, |
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const std::string& sele, double rCut, int lMax, int nbins); |
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const std::string& sele, double rCut, int nbins); |
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virtual ~BondOrderParameter(); |
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virtual void process(); |
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private: |
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void writeOrderParameter(std::vector<RealType> Q, std::vector<ComplexType> What); |
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private: |
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virtual void initalizeHistogram(); |
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virtual void collectHistogram(std::vector<RealType> q); |
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virtual void collectHistogram(std::vector<RealType> q, |
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std::vector<ComplexType> what); |
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void writeOrderParameter(std::vector<RealType> Q, |
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std::vector<ComplexType> What); |
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Snapshot* currentSnapshot_; |
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– |
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std::string selectionScript_; |
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SelectionManager seleMan_; |
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SelectionEvaluator evaluator_; |
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RealType rCut_; |
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int lMax_; |
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static const int lMax_ = 12; |
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int frameCounter_; |
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int nBins_; |
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< |
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std::map<std::pair<int,int>,int> m2Min; |
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std::map<std::pair<int,int>,int> m2Max; |
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std::map<std::pair<int,int>,std::vector<RealType> > w3j; |
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|
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RealType MinQ_; |
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RealType MaxQ_; |
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RealType deltaQ_; |
