<?xml version="1.0"?>
<!DOCTYPE ipe SYSTEM "ipe.dtd">
<ipe version="70005" creator="Ipe 7.1.2">
<info created="D:20130513204549" modified="D:20130617212945"/>
<ipestyle name="cust">
<symbol name="arrow/fnormal(spx)">
<path fill="black">
0 0 m
-1 0.333 l
-1 -0.333 l
h
</path>
</symbol>
<pen name="heavier" value="0.8"/>
<pen name="fat" value="1.2"/>
<pen name="ultrafat" value="2"/>
<symbolsize name="large" value="5"/>
<symbolsize name="small" value="2"/>
<symbolsize name="tiny" value="1.1"/>
<arrowsize name="large" value="10"/>
<arrowsize name="small" value="5"/>
<arrowsize name="tiny" value="3"/>
<dashstyle name="dashed" value="[4] 0"/>
<dashstyle name="finedash" value="[2] 0"/>
<textsize name="large" value="\large"/>
<textsize name="small" value="\small"/>
<textsize name="tiny" value="\tiny"/>
<textsize name="Large" value="\Large"/>
<textsize name="LARGE" value="\LARGE"/>
<textsize name="huge" value="\huge"/>
<textsize name="Huge" value="\Huge"/>
<textsize name="footnote" value="\footnotesize"/>
<textstyle name="center" begin="\begin{center}" end="\end{center}"/>
<textstyle name="itemize" begin="\begin{itemize}" end="\end{itemize}"/>
<textstyle name="item" begin="\begin{itemize}\item{}" end="\end{itemize}"/>
<gridsize name="4 pts" value="4"/>
<gridsize name="8 pts (~3 mm)" value="8"/>
<gridsize name="16 pts (~6 mm)" value="16"/>
<gridsize name="32 pts (~12 mm)" value="32"/>
<gridsize name="10 pts (~3.5 mm)" value="10"/>
<gridsize name="20 pts (~7 mm)" value="20"/>
<gridsize name="14 pts (~5 mm)" value="14"/>
<gridsize name="28 pts (~10 mm)" value="28"/>
<gridsize name="56 pts (~20 mm)" value="56"/>
<anglesize name="90 deg" value="90"/>
<anglesize name="60 deg" value="60"/>
<anglesize name="45 deg" value="45"/>
<anglesize name="30 deg" value="30"/>
<anglesize name="22.5 deg" value="22.5"/>
<opacity name="filled" value="0.2"/>
<layout paper="248 136" origin="0 0" frame="248 136"/>
<gradient name="bluered" type="axial" coords="0 0 32 0">
 <stop offset="0" color="0.7 0.7 1"/>
 <stop offset="1" color="1 0.7 0.7"/>
</gradient>
<tiling name="falling" angle="-60" step="4" width="1"/>
<tiling name="rising" angle="30" step="4" width="1"/>
</ipestyle>
<page>
<layer name="alpha"/>
<layer name="BBOX"/>
<view layers="alpha BBOX" active="alpha"/>
<path layer="alpha" fill="0.95">
100 132 m
104 116 l
168 84 l
172 132 l
h
</path>
<path matrix="1 0 0 1 -120 -644" fill="0.6 0.8 1">
288 776 m
288 664 l
328 664 l
328 776 l
h
</path>
<path fill="black" opacity="filled">
208 44 m
208 20 l
168 20 l
168 44 l
h
</path>
<path fill="0.7 0.7 1">
64 132 m
64 20 l
28 20 l
28 132 l
h
</path>
<path matrix="1 0 0 1 -120 -644" fill="1 0.7 0.7">
224 776 m
224 664 l
200 664 l
200 776 l
h
</path>
<path matrix="1 0 0 1 56 20" fill="white" gradient="bluered">
32 112 m
32 0 l
0 0 l
0 112 l
h
</path>
<path fill="black" opacity="filled">
28 68 m
56 68 l
72 64
88 52 s
104 52 l
104 20 l
28 20 l
</path>
<path matrix="1 0 0 1 0 4" stroke="black" pen="ultrafat">
4 100 m
4 100 l
4 100 l
4 100 l
h
</path>
<path stroke="black" arrow="fnormal/normal">
16 20 m
16 128 l
</path>
<path matrix="1 0 0 1 -104 -652" stroke="black" arrow="fnormal/normal">
136 664 m
328 664 l
</path>
<text matrix="0 1 -1 0 796 -100" pos="160 784" stroke="black" type="label" width="30.884" height="6.815" depth="1.93" valign="baseline">Energy</text>
<text matrix="1 0 0 1 2.663 -669.875" transformations="translations" pos="101.337 719.875" stroke="black" type="label" width="18.901" height="6.808" depth="2.85" halign="right" valign="top">\textcolor[rgb]{0.3,0,0.3}{$E_{\rm F,e}$}</text>
<text matrix="1 0 0 1 -88 -652" transformations="translations" pos="192 656" stroke="black" type="label" width="35.34" height="6.808" depth="0" valign="baseline">Position</text>
<path matrix="1 0 0 1 -120 -644" stroke="black" dash="finedash">
216 760 m
232 760 l
</path>
<path matrix="1 0 0 1 -56 -676" stroke="black" dash="finedash">
216 760 m
232 760 l
</path>
<path matrix="1 0 0 1 -16 -716" stroke="black" dash="finedash">
216 760 m
232 760 l
</path>
<path matrix="1 0 0 1 -120 -644" stroke="black" dash="finedash">
168 696 m
200 696 l
</path>
<path matrix="1 0 0 1 -120 -644" stroke="black" dash="finedash">
184 712 m
336 712 l
</path>
<text matrix="1 0 0 1 -124 -640" transformations="translations" pos="228 724" stroke="black" type="label" width="13.45" height="6.812" depth="1.49" halign="right" valign="baseline">$W_{\rm e}$</text>
<text matrix="1 0 0 1 -60 -672" transformations="translations" pos="228 724" stroke="black" type="label" width="13.45" height="6.812" depth="1.49" valign="baseline">$W_{\rm c}$</text>
<text matrix="1 0 0 1 -84 -644" transformations="translations" pos="136 704" stroke="black" type="label" width="23.651" height="6.812" depth="1.49" halign="right" valign="center">$e\Delta V_{\rm S}$</text>
<text matrix="1 0 0 1 -120 -772" transformations="translations" pos="184 792" stroke="black" type="label" width="31.576" height="6.654" depth="0" halign="center" valign="baseline">emitter</text>
<text matrix="1 0 0 1 -48 -772" transformations="translations" pos="184 792" stroke="black" type="label" width="33.486" height="4.289" depth="0" halign="center" valign="baseline">vacuum</text>
<text matrix="1 0 0 1 4 -772" transformations="translations" pos="184 792" stroke="black" type="label" width="36.557" height="6.918" depth="0" halign="center" valign="baseline">collector</text>
<text matrix="1 0 0 1 -40 -60" transformations="translations" pos="256 112" stroke="black" type="label" width="26.335" height="6.812" depth="1.49" valign="baseline">$e\Delta V_{\rm ce}$</text>
<text matrix="1 0 0 1 66.663 -677.875" transformations="translations" pos="101.337 719.875" stroke="black" type="label" width="18.901" height="6.808" depth="2.85" valign="top">\textcolor[rgb]{0.3,0,0.3}{$E_{\rm F,c}$}</text>
<text matrix="1 0 0 1 -104 -684" transformations="translations" pos="248 792" stroke="black" type="label" width="18.324" height="6.926" depth="1.93" halign="right" valign="baseline">\textcolor[rgb]{0.2,0.6,0.2}{$-e\phi$}</text>
<text matrix="1 0 0 1 -12 -36" transformations="translations" pos="116 160" stroke="black" type="label" width="22.139" height="7.473" depth="2.49" halign="right" valign="baseline">(hot)</text>
<path stroke="black">
188 132 m
188 132 l
188 132 l
188 132 l
h
</path>
<path layer="BBOX" stroke="black">
0 0 m
0 136 l
248 136 l
248 0 l
h
</path>
<path layer="alpha" matrix="1 0 0 1 -120 -644" stroke="0.2 0.6 0.2" pen="ultrafat">
224 760 m
288 728 l
</path>
<path stroke="0.3 0 0.3" pen="ultrafat">
28 68 m
56 68 l
72 64
88 52 s
104 52 l
</path>
<path matrix="1 0 0 1 -16 -12" stroke="0.3 0 0.3" pen="ultrafat">
184 56 m
224 56 l
</path>
<path matrix="1 0 0 1 -120 -660" stroke="black" rarrow="fnormal/small">
288 744 m
288 704 l
</path>
<path matrix="1 0 0 1 -120 -644" stroke="black" rarrow="fnormal/small">
224 760 m
224 696 l
</path>
<path matrix="1 0 0 1 -2 0" stroke="black" rarrow="fnormal/small">
56 68 m
56 52 l
</path>
<path matrix="1 0 0 1 -120 -644" stroke="black" rarrow="fnormal/small">
336 712 m
336 688 l
</path>
</page>
</ipe>