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Completed Geant4 materials list #392

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merged 2 commits into from
Aug 1, 2024
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bene73
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@bene73 bene73 commented Jul 30, 2024

Defined the physical properties for PEN, PTFE and CdZnTe.
Now, all elements that are available in SolidStateDetectors.jl can also be used to perform Geant4 simulations.

The fraction field in each of the compound materials denotes the relative mass of the element in terms of the total mass of each molecule. The fractions for each material are calculated in the following way:

  • PEN (C14H10O4)
    • C: $\frac{14 \cdot 12.0107}{14 \cdot 12.0107 + 10 \cdot 1.00794 + 4 \cdot 15.9994}\approx 0.6942$
    • H: $\frac{10 \cdot 1.00794}{14 \cdot 12.0107 + 10 \cdot 1.00794 + 4 \cdot 15.9994}\approx 0.0416$
    • O: $\frac{4 \cdot 15.9994}{14 \cdot 12.0107 + 10 \cdot 1.00794 + 4 \cdot 15.9994}\approx 0.2642$
  • PTFE (C2F4)
    • C: $\frac{2 \cdot 12.0107 }{2 \cdot 12.0107 + 4 \cdot 18.9994}\approx 0.2402$
    • F: $\frac{4 \cdot 18.9994}{2 \cdot 12.0107 + 4 \cdot 18.9994}\approx 0.7598$
  • CdZnTe (Cd0.9Zn0.1Te)
    • Cd: $\frac{0.9\cdot 112.411}{0.9\cdot 112.411 + 0.1 \cdot65.38 + 127.6}\approx 0.4300$
    • Zn: $\frac{0.1 \cdot65.38}{0.9\cdot 112.411 + 0.1 \cdot65.38 + 127.6}\approx 0.0278$
    • Te: $\frac{127.6}{0.9\cdot 112.411 + 0.1 \cdot65.38 + 127.6}\approx 0.5422$

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@fhagemann fhagemann mentioned this pull request Aug 1, 2024
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@fhagemann fhagemann merged commit 842d106 into JuliaPhysics:geant4 Aug 1, 2024
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@oschulz
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oschulz commented Aug 1, 2024

For the COBRA CdZnTe experiment we used

<element name="Cd_standard" formula="Cd" Z="48" >
	<fraction ref="Cd106" n="0.0125" />
	<fraction ref="Cd108" n="0.0089" />
	<fraction ref="Cd110" n="0.1251" />
	<fraction ref="Cd111" n="0.1281" />
	<fraction ref="Cd112" n="0.2413" />
	<fraction ref="Cd113" n="0.1222" />
	<fraction ref="Cd114" n="0.2872" />
	<fraction ref="Cd116" n="0.0747" />
</element>

<element name="Zn_standard" formula="Zn" Z="30">
	<fraction ref="Zn64" n="0.486"/>
	<fraction ref="Zn66" n="0.279"/>
	<fraction ref="Zn67" n="0.041"/>
	<fraction ref="Zn68" n="0.188"/>
	<fraction ref="Zn70" n="0.006"/>
</element>

<element name="Te_standard" formula="Te" Z="52" >
	<fraction ref="Te122" n="0.0257"/>
	<fraction ref="Te123" n="0.0089"/>
	<fraction ref="Te124" n="0.0476"/>
	<fraction ref="Te125" n="0.071"/>
	<fraction ref="Te126" n="0.1889"/>
	<fraction ref="Te128" n="0.3173"/>
	<fraction ref="Te130" n="0.3397"/>
</element>

<material name="CdZnTe" state="solid">
	<D value="5.78" unit="g/cm3"/>
	<fraction n="0.5" ref="Te_standard" />
	<fraction n="0.05" ref="Zn_standard" />
	<fraction n="0.45" ref="Cd_standard" />
</material>

@fhagemann
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For the COBRA CdZnTe experiment we used

<element name="Cd_standard" formula="Cd" Z="48" >
	<fraction ref="Cd106" n="0.0125" />
	<fraction ref="Cd108" n="0.0089" />
	<fraction ref="Cd110" n="0.1251" />
	<fraction ref="Cd111" n="0.1281" />
	<fraction ref="Cd112" n="0.2413" />
	<fraction ref="Cd113" n="0.1222" />
	<fraction ref="Cd114" n="0.2872" />
	<fraction ref="Cd116" n="0.0747" />
</element>

<element name="Zn_standard" formula="Zn" Z="30">
	<fraction ref="Zn64" n="0.486"/>
	<fraction ref="Zn66" n="0.279"/>
	<fraction ref="Zn67" n="0.041"/>
	<fraction ref="Zn68" n="0.188"/>
	<fraction ref="Zn70" n="0.006"/>
</element>

<element name="Te_standard" formula="Te" Z="52" >
	<fraction ref="Te122" n="0.0257"/>
	<fraction ref="Te123" n="0.0089"/>
	<fraction ref="Te124" n="0.0476"/>
	<fraction ref="Te125" n="0.071"/>
	<fraction ref="Te126" n="0.1889"/>
	<fraction ref="Te128" n="0.3173"/>
	<fraction ref="Te130" n="0.3397"/>
</element>

<material name="CdZnTe" state="solid">
	<D value="5.78" unit="g/cm3"/>
	<fraction n="0.5" ref="Te_standard" />
	<fraction n="0.05" ref="Zn_standard" />
	<fraction n="0.45" ref="Cd_standard" />
</material>

But is the fraction the atomic fraction or the mass fraction? Because 0.5,0.05,0.45 looks like atomic fractions to me

@fhagemann fhagemann added the geant4 Anything related to the Geant4 support label Aug 16, 2024
@fhagemann fhagemann mentioned this pull request Aug 16, 2024
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