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<TITLE>NIST: X-Ray Mass Attenuation Coefficients - Helium</TITLE>
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<img src="Graphs/z02.gif" ALT="Helium graph">
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<TABLE CELLPADDING="0" CELLSPACING="0" BORDER="0">
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<TABLE CELLPADDING="1" CELLSPACING="0" BORDER="0">
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<DIV ALIGN="center"><BR>
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<I>Z</I> = 2</B><BR><BR>
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<FONT size="-1" face="Arial, Helvetica, sans-serif">
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HTML table format<BR><BR></FONT></DIV></TD>
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<TD COLSPAN="5"><HR SIZE="1" NOSHADE></TD>
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<TH scope="col">Energy<SUP> </SUP></TH>
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<TD ROWSPAN="42"> </TD>
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<TH scope="col"><img src="../Eqs/murho.gif" ALT="mu over rho"><SUB> </SUB></TH>
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<TD ROWSPAN="42" WIDTH="20"> </TD>
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<TH scope="col"><img src="../Eqs/muen.gif" ALT="mu e n over rho"><SUB> </SUB></TH>
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<TD><SUP> </SUP>(MeV)</TD>
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<TD>(cm<sup>2</sup>/g)<SUB> </SUB></TD>
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<TD>(cm<sup>2</sup>/g)</TD>
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<TD WIDTH="70"> </TD>
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<i>Z</i> = 2</B><BR><BR>
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<FONT size="-1" face="Arial, Helvetica, sans-serif">ASCII format</FONT></DIV>
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<PRE>_________________________________
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<B>Energy</B><SUB> </SUB> <img src="../Eqs/murho.gif"
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ALT="mu over rho"> <img
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src="../Eqs/muen.gif" ALT="mu e n over rho">
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<SUP> </SUP>(MeV) (cm<sup>2</sup>/g) (cm<sup>2</sup>/g)
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_________________________________
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1.00000E-03 6.084E+01 6.045E+01
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1.50000E-03 1.676E+01 1.638E+01
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2.00000E-03 6.863E+00 6.503E+00
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3.00000E-03 2.007E+00 1.681E+00
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4.00000E-03 9.329E-01 6.379E-01
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5.00000E-03 5.766E-01 3.061E-01
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6.00000E-03 4.195E-01 1.671E-01
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8.00000E-03 2.933E-01 6.446E-02
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1.00000E-02 2.476E-01 3.260E-02
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1.50000E-02 2.092E-01 1.246E-02
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2.00000E-02 1.960E-01 9.410E-03
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3.00000E-02 1.838E-01 1.003E-02
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4.00000E-02 1.763E-01 1.190E-02
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5.00000E-02 1.703E-01 1.375E-02
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6.00000E-02 1.651E-01 1.544E-02
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8.00000E-02 1.562E-01 1.826E-02
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1.00000E-01 1.486E-01 2.047E-02
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1.50000E-01 1.336E-01 2.424E-02
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2.00000E-01 1.224E-01 2.647E-02
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3.00000E-01 1.064E-01 2.868E-02
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4.00000E-01 9.535E-02 2.951E-02
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5.00000E-01 8.707E-02 2.971E-02
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6.00000E-01 8.054E-02 2.959E-02
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8.00000E-01 7.076E-02 2.890E-02
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1.00000E+00 6.362E-02 2.797E-02
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1.25000E+00 5.688E-02 2.674E-02
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1.50000E+00 5.173E-02 2.555E-02
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2.00000E+00 4.422E-02 2.343E-02
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3.00000E+00 3.503E-02 2.019E-02
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4.00000E+00 2.949E-02 1.790E-02
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5.00000E+00 2.577E-02 1.622E-02
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6.00000E+00 2.307E-02 1.493E-02
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8.00000E+00 1.940E-02 1.308E-02
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1.00000E+01 1.703E-02 1.183E-02
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1.50000E+01 1.363E-02 9.948E-03
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2.00000E+01 1.183E-02 8.914E-03
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