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bond_morse.txt
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			"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c

			:link(lws,http://lammps.sandia.gov)
			:link(ld,Manual.html)
			:link(lc,Section_commands.html#comm)

			:line

			bond_style morse command :h3

			[Syntax:]

			bond_style morse :pre

			[Examples:]

			bond_style morse
			bond_coeff 5 1.0 2.0 1.2 :pre

			[Description:]

			The {morse} bond style uses the potential

			:c,image(Eqs/bond_morse.jpg)

			where r0 is the equilibrium bond distance, alpha is a stiffness
			parameter, and D determines the depth of the potential well.

			The following coefficients must be defined for each bond type via the
			"bond_coeff"_bond_coeff.html command as in the example above, or in
			the data file or restart files read by the "read_data"_read_data.html
			or "read_restart"_read_restart.html commands:

			D (energy)
			alpha (inverse distance)
			r0 (distance) :ul

			[Restrictions:]

			This bond style can only be used if LAMMPS was built with the
			"molecular" package (which it is by default). See the "Making
			LAMMPS"_Section_start.html#2_3 section for more info on packages.

			[Related commands:]

			"bond_coeff"_bond_coeff.html, "delete_bonds"_delete_bonds.html

			[Default:] none