All Figures

$\begin{figure} \par\includegraphics[width=8.6cm,clip]{H4077F1.ps} \end{figure}$ Figure 1: Gyro-frequency of alpha particles in a flux tube, the curve for $f_{\rm H}$ (dashed line) is taken from model 1 in Fig. 2.
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In the text

$\begin{figure} \par\includegraphics[width=16cm,clip]{H4077F2.ps} \end{figure}$ Figure 2: A coronal heating and fast solar wind model in which the plasma is heated by ion cyclotron waves, Model 1. a) Speed of protons (thin solid line) and alpha particles (thick solid line). b) Temperature of electrons (dotted line), protons (thin solid line) and alpha particles (thick solid line). The dashed-dotted line is the proton effective temperature calculated from model 1. The narrow and wide vertical bars represent the observed proton effective temperatures from UVCS observations reported by Esser et al. (1999) and Kohl et al. (1998), respectively. c) Density of protons (thin solid line) and alpha particles (thick solid line). d) Heating rates of protons (thin solid line) and alpha particles (thick solid line). Here $f_{\rm d}=50~000$ Hz.
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In the text

$\begin{figure} \par\includegraphics[width=15.3cm,clip]{H4077F3.ps} \end{figure}$ Figure 3: An enlarged version of Fig. 2 in the region just above the lower boundary.
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In the text

$\begin{figure} \par\includegraphics[width=8cm,clip]{H4077F4.ps}\end{figure}$ Figure 4: Ratio between alpha particle heating term due to waves and collisional heating terms in alpha particle energy energy equation (Hu & Habbal 1999).
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In the text

$\begin{figure} \par\includegraphics[width=7.7cm,clip]{H4077F5.ps} \end{figure}$ Figure 5: Model 1: thermal pressure of electrons (dotted line), protons (thin solid line), and alpha particles (dashed line). The thick solid line represents the total pressure $n_{\rm e}T_{\rm e}+n_{\rm p}T_{\rm p}+n_\alpha T_\alpha$ .
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In the text

$\begin{figure} \par\includegraphics[width=7.5cm,clip]{H4077F6.ps} \end{figure}$ Figure 6: Model 1: a) the Alfvén speed (solid line) and the wave amplitude (dashed line); b) ratio $(v_\alpha -v_{\rm p})/v_{\rm A}$ ; c) Proton beta value.
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In the text

$\begin{figure} \par\includegraphics[width=8.4cm,clip]{H4077F7.ps} \end{figure}$ Figure 7: Contributions to the energy flux density, multiplied by $a(r)/a(R_{\rm S})$ for Model 1: Alfvén wave energy flux (dashed); total enthalpy (dotted); total kinetic energy flux (thin solid); total heat flux (dot-dashed); gravity (dash-triple-dotted); radiation (thick dashed). The thick solid line is the total energy flux density.
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In the text

$\begin{figure} \par\includegraphics[width=15.3cm,clip]{H4077F8.ps} \end{figure}$ Figure 8: A small region just above the lower boundary for Model 2. Here $f_{\rm d}=17~000$ Hz.
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In the text

$\begin{figure} \par\includegraphics[width=7.8cm,clip]{H4077F9.ps} \end{figure}$ Figure 9: Proton particle flux density (solid line) at the lower computation boundary, proton speed (dashed line) at $52.5~R_{\rm S}$ , and the transition region height (see text), as a function of $f_{\rm d}$ .
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In the text

$\begin{figure} \par\includegraphics[width=15.1cm,clip]{H4077F10.ps} \end{figure}$ Figure 10: A small region just above the lower boundary for Model 3. Here $f_{\rm d} =15~000$ Hz.
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In the text

$\begin{figure} \par\includegraphics[width=8.6cm,clip]{H4077F1.ps} \end{figure}$	Figure 1: Gyro-frequency of alpha particles in a flux tube, the curve for $f_{\rm H}$ (dashed line) is taken from model 1 in Fig. 2.
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$\begin{figure} \par\includegraphics[width=15.3cm,clip]{H4077F3.ps} \end{figure}$	Figure 3: An enlarged version of Fig. 2 in the region just above the lower boundary.
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$\begin{figure} \par\includegraphics[width=8cm,clip]{H4077F4.ps}\end{figure}$	Figure 4: Ratio between alpha particle heating term due to waves and collisional heating terms in alpha particle energy energy equation (Hu & Habbal 1999).
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$\begin{figure} \par\includegraphics[width=7.7cm,clip]{H4077F5.ps} \end{figure}$	Figure 5: Model 1: thermal pressure of electrons (dotted line), protons (thin solid line), and alpha particles (dashed line). The thick solid line represents the total pressure $n_{\rm e}T_{\rm e}+n_{\rm p}T_{\rm p}+n_\alpha T_\alpha$ .
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$\begin{figure} \par\includegraphics[width=7.5cm,clip]{H4077F6.ps} \end{figure}$	Figure 6: Model 1: a) the Alfvén speed (solid line) and the wave amplitude (dashed line); b) ratio $(v_\alpha -v_{\rm p})/v_{\rm A}$ ; c) Proton beta value.
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$\begin{figure} \par\includegraphics[width=8.4cm,clip]{H4077F7.ps} \end{figure}$	Figure 7: Contributions to the energy flux density, multiplied by $a(r)/a(R_{\rm S})$ for Model 1: Alfvén wave energy flux (dashed); total enthalpy (dotted); total kinetic energy flux (thin solid); total heat flux (dot-dashed); gravity (dash-triple-dotted); radiation (thick dashed). The thick solid line is the total energy flux density.
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$\begin{figure} \par\includegraphics[width=15.3cm,clip]{H4077F8.ps} \end{figure}$	Figure 8: A small region just above the lower boundary for Model 2. Here $f_{\rm d}=17~000$ Hz.
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$\begin{figure} \par\includegraphics[width=7.8cm,clip]{H4077F9.ps} \end{figure}$	Figure 9: Proton particle flux density (solid line) at the lower computation boundary, proton speed (dashed line) at $52.5~R_{\rm S}$ , and the transition region height (see text), as a function of $f_{\rm d}$ .
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$\begin{figure} \par\includegraphics[width=15.1cm,clip]{H4077F10.ps} \end{figure}$	Figure 10: A small region just above the lower boundary for Model 3. Here $f_{\rm d} =15~000$ Hz.
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