All Figures

$\begin{figure} \par\includegraphics[width=8.8cm,clip]{2589fig1.eps} \end{figure}$ Figure 1: a) Magnetic field lines for the potential 3D magnetic null configuration. b) Diagram of the inflow and outflow regions for spine reconnection.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=8.8cm,clip]{2589fig2.ps} \end{figure}$ Figure 2: Trajectories for the weak electric field ( top panels) and strong electric field ( bottom panels) regimes. The particle's initial position is (x₀,y₀,z₀)=(0, 0.8, 0.6), and input parameters are given in Table 1. Dotted lines indicate projections of magnetic field lines.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=6cm,clip]{2589fig3.ps} \end{figure}$ Figure 3: Dependence of energy gain on the particle's initial position. Top panel: each line type represents a particle trajectory projected onto the y-z plane. Bottom panel: time variation of the kinetic energy for the trajectories shown in the top panel. Here time is normalised by the initial particle gyroperiod. We consider a proton of initial energy 300 eV and initial pitch-angle 92 $^{\circ }$ , other parameters as in Table 1, for the strong electric field regime.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=7cm,clip]{2589fig4.eps} \end{figure}$ Figure 4: Plot of the particle's final energy versus the angle $\beta$ characterising the initial position in the y-z plane. Points are for a proton of initial energy 300 eV and initial pitch-angle 90 $^{\circ }$ , and other parameters as in Table 1, for the strong electric field regime.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=6cm,clip]{2589fig5.ps} \end{figure}$ Figure 5: Trajectories in the y-z plane for the same initial conditions as trajectory (b) of Fig. 3, but different values of the initial particle pitch-angle: (a) pitch-angle = 110 $^{\circ }$ and (b) pitch-angle = 80 $^{\circ }$ .
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=11.9cm,clip]{2589fig6.ps} \end{figure}$ Figure 6: Trajectory of a particle injected into a strong electric field configuration, with the same initial parameters as the solid-line trajectory of Fig. 3, except for the fact that initial pitch-angle is 90 $^{\circ }$ rather than 92 $^{\circ }$ . Note that the scale of the plot is enlarged compared to that of Fig. 3.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=12cm,clip]{2589fig7.ps} \end{figure}$ Figure 7: Top panels: trajectories for injections at different values of $\phi$ , i.e. for initial positions is in the semiplanes: (a): $\phi =90^{\circ }$ ; (b): $\phi =55^{\circ }$ ; (c): $\phi =20^{\circ }$ ; bottom panel: time variation of the kinetic energy for the three trajectories.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=11.9cm,clip]{2589fig8.ps} \end{figure}$ Figure 8: Trajectory for injection in the plane $\phi =20^{\circ }$ , integrated over a longer time than in Fig. 7. Here $t_{\rm final}=13~000.$
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=12cm,clip]{2589fig9.ps} \end{figure}$ Figure 9: Top panels: trajectories for injections into the electric field given by Eq. (14), with three values of $L_{\rm sp}$ . The plot for $L_{\rm sp}=0$ is the same as trajectory (b) of Fig. 7.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=8.8cm,clip]{2589fig1.eps} \end{figure}$	Figure 1: a) Magnetic field lines for the potential 3D magnetic null configuration. b) Diagram of the inflow and outflow regions for spine reconnection.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=8.8cm,clip]{2589fig2.ps} \end{figure}$	Figure 2: Trajectories for the weak electric field ( top panels) and strong electric field ( bottom panels) regimes. The particle's initial position is (x₀,y₀,z₀)=(0, 0.8, 0.6), and input parameters are given in Table 1. Dotted lines indicate projections of magnetic field lines.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=7cm,clip]{2589fig4.eps} \end{figure}$	Figure 4: Plot of the particle's final energy versus the angle $\beta$ characterising the initial position in the y-z plane. Points are for a proton of initial energy 300 eV and initial pitch-angle 90 $^{\circ }$ , and other parameters as in Table 1, for the strong electric field regime.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=6cm,clip]{2589fig5.ps} \end{figure}$	Figure 5: Trajectories in the y-z plane for the same initial conditions as trajectory (b) of Fig. 3, but different values of the initial particle pitch-angle: (a) pitch-angle = 110 $^{\circ }$ and (b) pitch-angle = 80 $^{\circ }$ .
Open with DEXTER

$\begin{figure} \par\includegraphics[width=11.9cm,clip]{2589fig6.ps} \end{figure}$	Figure 6: Trajectory of a particle injected into a strong electric field configuration, with the same initial parameters as the solid-line trajectory of Fig. 3, except for the fact that initial pitch-angle is 90 $^{\circ }$ rather than 92 $^{\circ }$ . Note that the scale of the plot is enlarged compared to that of Fig. 3.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=12cm,clip]{2589fig7.ps} \end{figure}$	Figure 7: Top panels: trajectories for injections at different values of $\phi$ , i.e. for initial positions is in the semiplanes: (a): $\phi =90^{\circ }$ ; (b): $\phi =55^{\circ }$ ; (c): $\phi =20^{\circ }$ ; bottom panel: time variation of the kinetic energy for the three trajectories.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=11.9cm,clip]{2589fig8.ps} \end{figure}$	Figure 8: Trajectory for injection in the plane $\phi =20^{\circ }$ , integrated over a longer time than in Fig. 7. Here $t_{\rm final}=13~000.$
Open with DEXTER

$\begin{figure} \par\includegraphics[width=12cm,clip]{2589fig9.ps} \end{figure}$	Figure 9: Top panels: trajectories for injections into the electric field given by Eq. (14), with three values of $L_{\rm sp}$ . The plot for $L_{\rm sp}=0$ is the same as trajectory (b) of Fig. 7.
Open with DEXTER