Re: Lutetium in FLUKA

Dear Alberto and Alfredo,
many thanks for all the advice. It is great if Lutetium could be added
to the library for the next respin, a few days are of course no
problem.!
With my kindest regards
Francesca

On 30 Jun 2011, at 19:33, Alfredo Ferrari wrote:

> Dear Francesca
>
> yes it is possible to add Lutetium to the Fluka neutron cross section
> library. Data exist for both 175-Lu and 176-Lu (no idea how good they
> are).
>
> Even though you did not put a LOW-NEUT card, the default of the code is to
> transport neutrons down to thermal energies, unless instructed otherwise.
>
> Furthermore, for an activation assessment the propagation and interaction
> of neutrons below 20 MeV down to thermal energies is essential. As a rule
> of thumb, even for high energy showers, the contributions of low energy
> neutron produced activation is of the same order of magnitude as the
> contribution of all others particles/interactions.
>
> If you can wait few days, since I ahve anyway to issue a respin of
> fluka2011.2, I can include Lutetium cross sections as well (again with no
> guarantee about their reliability).
>
> Ciao
> Alfredo
>
>+----------------------------------------------------------------------+
> | Alfredo Ferrari || Tel.: +41.22.76.76119 |
> | CERN-EN/STI || Fax.: +41.22.76.69474 |
> | 1211 Geneva 23 || e-mail: Alfredo.Ferrari_at_cern.ch |
> | Switzerland || |
>
+----------------------------------------------------------------------+
>
> On Thu, 30 Jun 2011, Francesca Nessi-Tedaldi wrote:
>
>> My next question about Lutetium is: would it be possible to have it added,
>> in its natural composition, to the FLUKA neutron cross section library?
>> There are several materials being presently produced and studied, that
>> contain Lutetium, and which are being developed, and already produced,
>> as scintillators for high-energy calorimetry (e.g. HL-LHC upgrades to detectors,
>> superB detector at Frascati), nuclear detectors and medical imaging (PET) applications.
>> Let me just mention a few:
>> LYSO (Lutetium-Yttrium Orthosilicate)
>> LSO (Lutetium Orthosilicate)
>> LuAG (Lutetium Aluminum garnet)
>> Let me just point out right away that Lutetium exhibits a 2.6% mol
>> natural abundance of 176Lu, a radioactive isotope, which can be important to include, depending on the application.
>>
>> Thank you in advance for your consideration.
>>
>> Best regards
>> Francesca
>>
>>
Received on Fri Jul 01 2011 - 09:41:23 CEST