$A$	Material constant for Al, ${\mathrm{s}}^{-1}{\mathrm{K}}^{-2}$
$B$	Material constant for Al, ${\mathrm{s}}^{-1}{\mathrm{K}}^{-1}$
$C_e$	Electron heat capacity, $\mathrm{J}/\left({\mathrm{m}}^3\mathrm{K}\right)$
$C_l$	Lattice heat capacity, $\mathrm{J}/\left({\mathrm{m}}^3\mathrm{K}\right)$
$F_{ab}$	Absorb laser fluence, $\mathrm{J}/{\mathrm{m}}^2$
$F_i$	Total force exerted on atom $i$, $\mathrm{N}$
$F_{o_{\mathit{\Delta }}}$	Fourier number, $\mathrm{n}\mathrm{o}\mathrm{n}\mathrm{e}$
${\tilde{F}}_{ran}$	Random force, $\mathrm{N}$
$G_0$	Initial electron-phonon coupling factor, $\mathrm{W}/\left({\mathrm{m}}^3\mathrm{K}\right)$
$G_{e-ph}$	Electron-phonon coupling factor, $\mathrm{W}/\left({\mathrm{m}}^3\mathrm{K}\right)$
$i$	Pulse number of the current calculation, $\mathrm{n}\mathrm{o}\mathrm{n}\mathrm{e}$
$K_{\mathrm{e}}$	Total kinetic energy in the grid, $\mathrm{J}$
$k_B$	Boltzmann constant, $\mathrm{J}/\mathrm{K}$
$k_e$	Electron thermal conductivity, $\mathrm{W}/\left(\mathrm{m}\mathrm{K}\right)$
$k_l$	Lattice thermal conductivity, $\mathrm{W}/\left(\mathrm{m}\mathrm{K}\right)$
$L_{ball}$	Ballistic transportation length, $\mathrm{m}$
$L_{op}$	Optical penetration depth, $\mathrm{m}$
$m_i$	Mass of atom $i$, $\mathrm{k}\mathrm{g}$
$N$	Atom density, $1/{\mathrm{m}}^3$
$N_{laser}$	Total pulse number, $\mathrm{n}\mathrm{o}\mathrm{n}\mathrm{e}$
$R$	Reflectivity, $\mathrm{n}\mathrm{o}\mathrm{n}\mathrm{e}$
$S$	Laser source term, $\mathrm{J}/{\mathrm{m}}^3$
$T_e$	Electron temperature, $\mathrm{K}$
$T_l$	Lattice temperature, $\mathrm{K}$
$t$	Time of the current calculation, $\mathrm{s}$
$t_i$	Pulse interval between the ith and (i − 1)th sub-pulses, $\mathrm{s}$
$t_p$	Laser-pulse duration, $\mathrm{s}$
$v_i$	Velocity of atom $i$, $\mathrm{m}/\mathrm{s}$
${\tilde{v}}_i$	Random vector, $\mathrm{m}/\mathrm{s}$
$z$	Depth of the laser irradiation, $\mathrm{m}$