results

The section reports some of the physics results that it is possible to obtain with NINA data. Scope of the section is only to give an idea of the physics that can be studied with NINA, and of the quality of the results that was reached. The complete set of NINA physics results, with details about the analysis techniques adopted, can be found in the Publications section.



Figure 1

The acceptance window of particles in full containment regime is shown in Table 1. The spectrum of nuclei extends from hydrogen to iron in the energy interval 10--200 MeV/n.

The mass M and the charge Z of the particles are calculated in parallel by two methods, in order to have a more precise particle recognition: the method of the residual range, and the method of the approximation to the Bethe-Bloch theoretical curve. In Figure 1 the helium reconstructed masses detected in orbit are compared to the ones obtained from the test-beam data; the sample of particles in orbit has been selected during passages over the polar caps, and in period of quiet solar activity. The picture shows that the mass resolution of NINA in flight is in good agreement with the measurements performed at ground.


  
Table 1
Particle Z Energy window (MeV/n)
1H1 10 - 48
4He29 - 50
7Li311 - 54
9Be413 - 65
11B515 - 75
12C617 - 90
14N718 - 95
16O820 - 103
19F921 - 107
20Ne1023 - 117
28Si1428 - 142
40Ca2039 - 175
56Fe2658 - 195