Related Experiment Video
Updated: Jul 4, 2026

Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
Published on: May 3, 2019
Experimental evidence of (2)He decay from (18)Ne excited states
G Raciti1, G Cardella, M De Napoli
1Dipartimento di Fisica e Astronomia, Università di Catania, Catania, Italy. raciti@lns.infn.it
Abstract:
Two-proton decay from (18)Ne excited states has been studied by complete kinematical reconstruction of the decay products. The (18)Ne nucleus has been produced as a radioactive beam by (20)Ne primary projectile fragmentation at 45 AMeV incident energy on a Be target. The (18)Ne at 33 AMeV incident energy has been excited via Coulomb excitation on a (nat)Pb target. The obtained results unambiguously show that the 6.15 MeV (18)Ne state two-proton decay proceeds through a (2)He diproton resonance (31%) and democratic or virtual sequential decay (69%). The quoted branching ratio has been deduced from relative angle and momentum correlations of the emitted proton pairs.
Related Concept Videos
Types of Radioactivity
Alpha (α) decay is the emission of an α particle from the nucleus. For example, polonium-210 undergoes α decay:
Radioactivity and Nuclear Equations
A nuclide of an element has a specific number of protons and...
Atomic Nuclei: Nuclear Spin State Population Distribution
Nuclear Stability
To hold positively charged protons together in the...
¹³C NMR: ¹H–¹³C Decoupling
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...
Nuclear Overhauser Enhancement (NOE)

