This review examines the tendency of light nuclei to exhibit clustering, where correlations
between nucleons result in the formation of precipitates, typically α particles. The …

Abstract The 7.65 MeV, J π= 0+, second excited state in 12 C is known as the Hoyle-state
after Fred Hoyle. In the 1950s Hoyle proposed the existence of the state in order to account …

A review of evidence on the properties of the A= 12 nuclei, with emphasis on material
leading to information about the structure of the A= 12 systems.

The decay path of the Hoyle state in C 12 (E x= 7.654 MeV) has been studied with the N 14
(d, α 2) C 12 (7.654) reaction induced at 10.5 MeV. High resolution invariant mass …

The current evaluation of the triple-α reaction rate assumes that the α decay of the 7.65 MeV,
0+ state in C 12, commonly known as the Hoyle state, proceeds sequentially via the ground …

The direct 3 α decay branch from the 0 2+ state at E x= 7.65 MeV in C 12, which is known as
the Hoyle state, is considered to affect the triple-α reaction rate strongly and to give crucial …

The first 0+ resonant state of the C 12 nucleus, C 12 (0 2+), the so-called Hoyle state, is
investigated in a three-α-particle (3-α) model. A wave function for the photodisintegration …

Background: Recent measurements indicate that the previously established upper limit for
the γ-decay branch of the 3 1− resonance in C 12 at E x= 9.641 (5) MeV may be incorrect. As …

Precise estimation of the rare direct 3α decay of the Hoyle state of 12 C has been made to
unveil its unusual α-cluster configurations ranging from linear 3α chain structure to diffuse …

A high-statistics, high-resolution, complete kinematical measurement has been performed to
estimate the quantitative contributions of various direct 3 α decay mechanisms in the decay …