150MeV/n (or down to 50MeV/n by RQMD wild extension through
PHYSICS/DPMTHRES) is the threshold for nuclear reactions of deuterons,
tritons and 3He on any target nucleus heavier than proton (hydrogen)
**************************************************
Francesco Cerutti
CERN-EN/STI
CH-1211 Geneva 23
Switzerland
tel. ++41 22 7678962
fax ++41 22 7668854
On Thu, 17 Dec 2015, Trinh Ngoc-Duy wrote:
> Dear Sir,
>
> Thank you so much for your answer.
>
> But some one tell me that that some months ago, this threshold for deuteron, 3He were at 150MeV/nucleon. Could you please confirm this point for me ? Is this the threshold for the transport or the nuclear reaction of theses ions ?
>
> Thank you.
>
> Ngoc Duy TRINH, PhD student, GANIL, France
> ________________________________________
> De : owner-fluka-discuss_at_mi.infn.it [owner-fluka-discuss_at_mi.infn.it] de la part de Francesco Cerutti [Francesco.Cerutti_at_cern.ch]
> Envoyé : jeudi 17 décembre 2015 00:14
> À : Ngoc-Duy Trinh
> Cc : FLUKA discussion
> Objet : Re: [fluka-discuss]: Transport threshold of particle in FLUKA
>
> Hi,
>
> below you are mixing up PRECISIO and NEW-DEFA default settings, which are
> alternative to each other. The first indeed adopts 100 keV thresholds, the
> second 10 MeV. Now, light ions up to alphas included take by default these
> respective thresholds, i.e. 100 keV or 10 MeV intended as total kinetic
> energy, so corresponding to different energies per nucleon depending on
> the ion mass. A safe way to ascertain what is going on is to look at the
> output file, where the (total kinetic) thresholds actually applied are
> printed.
> For all heavier ions, the alpha threshold scaled by the mass ratio
> applies, i.e. 25keV/A or 2.5 MeV/A.
>
> Cheers
>
> Francesco
>
> **************************************************
> Francesco Cerutti
> CERN-EN/STI
> CH-1211 Geneva 23
> Switzerland
> tel. ++41 22 7678962
> fax ++41 22 7668854
>
> On Wed, 16 Dec 2015, Ngoc-Duy Trinh wrote:
>
>> Dear FLUKA users,
>>
>> Could you please let me confirm the default TRANSPORT threshold for deuteron, 3He, alpha
>> in FLUKA ?
>>
>> For exemple i found in http://www.fluka.org/fluka.php?id=man_onl&sub=20 that for
>> PRECISION mode
>>
>> "Particle transport threshold set at 100 keV, except neutrons (1E-5 eV), and
>> (anti)neutrinos (0, but they are discarded by default anyway)"
>>
>> And i found in other FLUKA dicuss that :
>>
>> "
>> The transport energy threshold for the alpha particles is set by the
>> DEFAULTS card and it can be overwritten using the PART-THR card.
>> For example if you are using the NEW-DEFA default the particle transport
>> threshold is 10 MeV, i.e., 2.5 MeV/n for the alpha particles and for the
>> heavy ions.
>> http://www.fluka.org/web_archive/earchive/new-fluka-discuss/2807.html
>> "
>>
>> So if i understand well, the transport threshold is 2.5 MeV/n for heavy ion (alpha,
>> deuteron...) and 100 keV for all other particle ?
>>
>> Could you confirm this point for me ?
>>
>> Thank you so much for your help
>>
>>
>>
>>
>> --
>> TRINH Ngoc Duy
>>
>>
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Received on Thu Dec 17 2015 - 13:23:44 CET