[Gate-users] How to define a Sodium 22 source.

[Patay Gergely]

Dear Gaters,

in such cases it is actually easier to use a Na-22 ion source. As a positive 
side effect the additional gamma emissions (1274 keV) will be in your simulation 
too.

/gate/source/addSource na22
/gate/source/na22/setActivity 10000 Bq
/gate/source/na22/gps/particle ion
/gate/source/na22/gps/ion 11 22 0 0
/gate/source/na22/gps/monoenergy 0. keV
/gate/source/na22/gps/type Plane
/gate/source/na22/gps/shape Circle
/gate/source/na22/gps/radius 0.5 mm
/gate/source/na22/gps/angtype iso
/gate/source/na22/gps/centre 0. 0. 0. cm

In your physics list you have to enable radioactive decay:
/gate/physics/addProcess Decay
/gate/physics/addProcess RadioactiveDecay GenericIon

good luck,
  Gergely


On 2015-03-13 09:51, J.J.M. Kouwenberg wrote:
> Dear Andrea,
>
> If the energy type of your isotope is not in the preset list, you'll have the define the energy spectrum of the positron yourself.
> Below an example of my Galium 68 source:
>
> /gate/source/addSource G68
> /gate/source/G68/gps/particle e+
> /gate/source/G68/gps/energytype Arb
> /gate/source/G68/setActivity 1000000 becquerel
>
> /gate/source/G68/gps/histname arb
> /gate/source/G68/gps/emin 0.0 MeV
> /gate/source/G68/gps/emax 2.921 MeV
> #                                 MeV      Yield
> /gate/source/G68/gps/histpoint    0.00     0.00
> /gate/source/G68/gps/histpoint    .1947    0.0351
> /gate/source/G68/gps/histpoint    .3895    0.0588
> /gate/source/G68/gps/histpoint    .5842    0.0797
> /gate/source/G68/gps/histpoint    .7789    0.0964
> /gate/source/G68/gps/histpoint    .9737    0.1079
> /gate/source/G68/gps/histpoint    1.168    0.1134
> /gate/source/G68/gps/histpoint    1.363    0.1127
> /gate/source/G68/gps/histpoint    1.558    0.1059
> /gate/source/G68/gps/histpoint    1.753    0.0936
> /gate/source/G68/gps/histpoint    1.947    0.0770
> /gate/source/G68/gps/histpoint    2.142    0.0576
> /gate/source/G68/gps/histpoint    2.337    0.0374
> /gate/source/G68/gps/histpoint    2.532    0.0190
> /gate/source/G68/gps/histpoint    2.726    0.0054
> /gate/source/G68/gps/arbint Lin
>
> With kind regards,
>
> Jasper J.M. Kouwenberg
> Medical Physics Graduate student
> Nuclear Medicine
>
>
>
> E-mail j.kouwenberg at erasmusmc.nl | Phone +316 2532 9809
>
> ________________________________________
> From: gate-users-bounces at lists.opengatecollaboration.org [gate-users-bounces at lists.opengatecollaboration.org] on behalf of Andrea González [andreita_5_92 at hotmail.com]
> Sent: 12 March 2015 17:11
> To: gate-users at lists.opengatecollaboration.org
> Subject: [Gate-users] How to define a Sodium 22 source.
>
> Hi all, I want to define a Sodium 22 (positron emission) source.
>
> This is my code:
>
> /gate/source/addSource Sodium
> /gate/source/Sodium/setActivity 10000 becquerel
>
> /gate/source/Sodium/gps/particle e+
> /gate/source/Sodium/setForcedUnstableFlag true
> /gate/source/Sodium/setForcedHalfLife 82078747.2 s
> /gate/source/Sodium/gps/energytype Sodium22
>
>
> /gate/source/Sodium/gps/type Plane
> /gate/source/Sodium/gps/shape Circle
> /gate/source/Sodium/gps/radius 0.5 mm
> /gate/source/Sodium/gps/angtype iso
> /gate/source/Sodium/gps/centre 0. 0. 0. cm
>
>
>
> /gate/source/list
>
>
>
> Is that correct?
>
> Thank you!
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>