Study of light neutron-rich nuclei with 14C-induced reactions

Particle-Unstable Nuclei in the Hartree-Fock Theory

“…Very recently, two-proton emission from an unbound ground state has been observed in the three-body decay of 12 O [3]. The mass and excited states of the long searched heavy helium isotope 10 He (which has the largest observed neutron to proton ratio) has been measured [4,5] using a beam where both the projectile and the target are radioactive nuclei.…”

Properties of low-lying levels ofBe14

“…mass excess was first measured in a pion-induced double-charge-exchange reaction, 14 C(π − , π + ) 14 Be [2]. The first-excited 2 + state, at E x = 1.54 MeV, E 2n = 0.28 MeV, was first observed in a heavy-ion reaction [3] and later confirmed by other experiments [4][5][6]. One experiment [6] reported a state at 4.1 MeV.…”

“…(They credit Refs. [3,4] for the claim that the first 2 + state is d 2 , but I do not find that statement in either reference.) These results might appear to be in conflict with the wave functions of Table II, but I show here that the numerical results do not conflict.…”

Clustering and Correlations in Neutron Haloes

“…To date the majority of searches for multineutron systems have relied on very low (typically ∼1 nb) cross section double-pion charge exchange (DπCX) and heavyion transfer reactions (see, for example, refs 16), 21) ). In the case of dissociation of an energetic beam of a very neutron-rich nucleus, relatively high cross sections (typically ∼100 mb) are encountered.…”