Details

Autor(en) / Beteiligte

• Bernabei, R.
• Belli, P.
• Montecchia, F.
• De Sanctis, M.
• Di Nicolantonio, W.
• Incicchitti, A.
• Prosperi, D.
• Bacci, C.
• Dai, C.J.
• Ding, L.K.
• Kuang, H.H.
• Ma, J.M.

Titel

Search for non-paulian transitions in 23Na and 127I

Ist Teil von

• Physics letters. B, 1997-09, Vol.408 (1), p.439-444

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

1997

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• A new search of non-paulian nuclear processes, i.e. processes normally forbidden by the Pauli exclusion principle, was carried out by determining an improved upper limit for the spontaneous emission rate of protons in 23Na and 127I. A large set-up of highly radiopure NaI(Tl) crystals was employed; it was placed deeply underground at the Gran Sasso National Laboratory of I.N.F.N. The upper limit on the unit time probability of non-paulian emission of protons with energy E p ⩾ 10 MeV is λ ⩽ 4.6 · 10 −33 s −1. The corresponding limit on the relative strength ( δ 2) for the searched non-paulian transitions has been estimated to be δ 2 ≲ 1.0 · 10 −54.