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root/group/trunk/OOPSE-3.0/forceFields/DUFF2.frc
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Comparing trunk/OOPSE-3.0/forceFields/DUFF2.frc (file contents):
Revision 2102 by tim, Thu Mar 10 16:14:07 2005 UTC vs.
Revision 2151 by chrisfen, Fri Apr 8 14:41:40 2005 UTC

# Line 44 | Line 44 | Kr             83.80          
44   Cl              35.4527        
45   Ar              39.948          
46   Br              79.904          
47 < Kr              83.80          
47 > Kr              83.80  
48 > Cl-             35.4527
49 > Na+             22.9898
50 > Na              22.9898
51   end AtomTypes
52  
53   begin DirectionalAtomTypes
# Line 89 | Line 92 | Kr       0.32590340268         3.83                  
92   Cl        0.344781953445        3.35
93   Ar        0.238068461226        3.41
94   Br        0.511111921764        3.54
95 < Kr        0.32590340268         3.83                  
95 > Kr        0.32590340268         3.83
96 > Cl-       0.1180                4.41724
97 > Na+       0.002772              3.330445                      
98 > Na        0.002772              3.330445                      
99   end LennardJonesAtomTypes
100  
101   begin ChargeAtomTypes
# Line 104 | Line 110 | Cl      -1.0
110   H_SPC     0.42
111   EP_TIP4P -1.040
112   EP_TIP5P -0.241
113 < Cl       -1.0
113 > Cl-      -1.0
114 > Na+       1.0
115   end ChargeAtomTypes
116  
117   begin MultipoleAtomTypes
118 < //only support up tp quadrupole.
119 < //possible format:
118 > // OOPSE currently only supports charge-charge, charge-dipole,
119 > // dipole-dipole, and charge-quadrupole interactions.
120 > // Dipoles may be either traditional point-dipoles or split-dipoles.
121 > // possible formats for a multipolar atom type are:
122 > //
123 > // Point-dipoles:
124   // name d phi theta psi dipole_moment
125 + //
126 + // Split-dipoles:
127   // name s phi theta psi dipole_moment splitdipole_distance
128 + //
129 + // Point-Quadrupoles:
130   // name q phi theta psi Qxx Qyy Qzz
131 + //
132 + // Atoms with both dipole and quadrupole moments:
133   // name dq phi theta psi dipole_moment Qxx Qyy Qzz
134 + //
135 + // Atoms with both split dipoles and quadrupole moments:
136   // name sq phi theta psi dipole_moment splitdipole_distance Qxx Qyy Qzz
118 // euler angles are given in units of degree
119 // dipoles are given in units of Debye
120 // split dipole distances are given in units of Angstrom
121 // quadrupoles are given in units of
137   //
138 < SSD_E   d       0.0     0.0     0.0     2.42
139 < SSD_RF  d       0.0     0.0     0.0     2.48
140 < SSD     d       0.0     0.0     0.0     2.35
141 < SSD1    d       0.0     0.0     0.0     2.35
138 > // Euler angles are given in zxz convention in units of degrees.
139 > //
140 > // Charges are given in units of electrons.
141 > //
142 > // Dipoles are given in units of Debyes.
143 > //
144 > // Split dipole distances are given in units of Angstroms.
145 > //  
146 > // Quadrupole moments are given in units of 10^-26 esu cm^2 (also known as an
147 > //                                                           esu centi-barn)
148 > //
149 > SSD_E   dq       0.0     0.0     0.0     2.42  -1.682  1.762  -0.08
150 > SSD_RF  dq       0.0     0.0     0.0     2.48  -1.682  1.762  -0.08
151 > SSD     dq       0.0     0.0     0.0     2.35  -1.682  1.762  -0.08
152 > SSD1    dq       0.0     0.0     0.0     2.35  -1.682  1.762  -0.08
153   //HDP     s       0.0     0.0     0.0     20.6    4.63
154   end MultipoleAtomTypes
155  

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