In this work, using a scintillation detector with Strontium-90 source as a try to
measure the electronic neutrino mass from a simple technique and different from what is
used in this area where current techniques used are very complex and require s
ubstantial
amounts.
Also, detector calibration (to find the straight calibration equation), in addition to
identified the maximum energy of β- particles (electrons), experimentally, by selection the
channel number and then finding the energy value from the calibration equation (as a
straight line).
We have studied the disintegration changed energy with absorbent material which is
an aluminum slices that have different thickness.
We have observed the decrease in the values of the maximum energy of the electrons
with increases the thickness of the slices. The energy changes with thickness as: E = f (x),
(a straight line have a negative inclination).
Applying Fermi 's theory and Kurie's plot allowed to find the maximum energy of
disintegration electrons (1697,58 keV), this value is so close to experimental value
(1653,45 keV), with dubity (2,6%)
We have found that the electronic mass neutrino mass is almost to be non-existent, or
we can said that the Strontium-90 disintegration does not allow to measure mass neutrino
mass accurately, this is due to the high value of the disintegration energy of the Strontium-
90 isotope.
