[Gate-users] Materials with user-defined isotope abundances

[APSARA TENNAKOON]

Thank you Konstantinos,

Could you help advise if GATE allows me to define a material containing *a
specific isotope *of an element (e.g. 18-O). I am trying to simulate
interactions of a proton beam in 18-O enriched water.

I have tried to define a new element 'Heavyoxygen' (S = Oh) with Z = 8., A
= 17.999 g/mole, and a new material Heavywater composed of H and Oh in
GateMaterials.db. My concern is if GATE recognizes Oh as 18-O and knows to
use the associated cross-sections for interactions with e.g. protons.

Please advise.

Thank you!
Apsara

On Sat, Apr 3, 2021 at 3:04 PM APSARA TENNAKOON <apsara at connect.hku.hk>
wrote:

> Thank you, Konstantinos,
>
> Sorry, to clarify, I am trying to define 18-O enriched water in GATE. Does
> GATE allow one to define an *isotope* of an element (e.g. *18*-O) - and
> hence 18-O water - in GateMaterials.db, and have e.g. protons interacting
> with it using the relevant reaction cross-sections for *18*-O?
>
> Thank you!
>
> Apsara Tennakoon
>
> On Sat, Apr 3, 2021 at 1:08 PM Konstantinos P. Chatzipapas <
> konhat88 at yahoo.gr> wrote:
>
>> Hello Apsara,
>>
>> What exactly do you mean by enriched materials?? You can insert any kind
>> of material in GateMaterials.db.
>>
>> https://opengate.readthedocs.io/en/latest/materials.html
>>
>>
>> Regards,
>> Konstantinos
>>
>> -----------------------------------------------------
>>  Konstantinos Chatzipapas
>>     Medical Physicist, MSc
>>        University of Patras
>>
>>  web: Physics Magazine <http://physicsfeed.blogspot.com/>
>>
>>
>> Στις Παρασκευή, 2 Απριλίου 2021, 10:44:25 μ.μ. EEST, ο χρήστης APSARA
>> TENNAKOON <apsara at connect.hku.hk> έγραψε:
>>
>>
>> Dear GATE users,
>>
>> Is it possible to define enriched materials in GATE? I would like to
>> simulate a proton beam in e.g. 50% 18-O enriched water, and score
>> proton-induced activation, to attempt to replicate the TOPAS simulations
>> in this work:
>> https://doi.org/10.1016/j.radphyschem.2021.109385
>>
>> Thank you!
>>
>> Best regards,
>>
>> Apsara Tennakoon
>> Masters student - Medical Physics
>> The University of Sydney
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>>
>
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