Hi everyone,

I am using the latest version (50p) to calculate charged CR fluxes.
For the deuteron flux, I set the input parameter, max_Z = 2, to produce it because it is belived that deuterons are mainly generated by the spallation of the He nuclei.
However, the output file, nuclie_50p_xxxxxxx, couldn't generate enough flux to be match the experiment data from the AMS-01.

For comparison, I am posting the difference between 42.3p and 50p.
In case of v42.3p -------------------------------------------------------------------------
Ene[GeV/n] E^2*Flux[GeV/n m^2 sec sr]^-1, modul.ated with Phi = 600MV
1.225 29.59 14.92
-----------------------------------------------------------------------------------------------
In case of v50p -------------------------------------------------------------------------
Ene[GeV/n] E^2*Flux[GeV/n m^2 sec sr]^-1, modul.ated with Phi = 600MV
1.145 0.1059 0.04972
-----------------------------------------------------------------------------------------------

Is there anyone who generate the deutron flux with the latest version?
I would appreciate any comments and suggestions in advance.

I just noticed your comment.
We will look into it, I guess Igor may know.

_________________
Andy Strong, MPE

You are right, the calculation of the deuteron flux requires the production cross sections which are not in the public version. The next public version will have them.

_________________
Igor Moskalenko
Stanford University

I checked the He(2, 3+4) spectrum using the same version(50p) and found that the calculated fluxes(LIS) above 20GeV/n were lower than experimental data set. In comparing the flux of He(2,3) to He(2,4), 3He is lower than 4He by a factor of four. In the AMS-01 paper(Physics Reports 366, 331, 2002), we could estimate 3He to be abundant of 11.5% in the total He events. Is there any missing production cross section or chain in the new release version? I run the conventional model and didn't check with different cross section option. Thanks for any comments in advance.

Hello everyone!

Any news on this? As far as I know, the He3 to He4 ratio is still wrong with version v50.1p.

Cheers
Bastian