Hoyle and the magnetosphere

Aeronomy and the Magnetosphere

1. The Neutral Atmosphere 1.1. The Mesosphere 1.2. The Thermosphere 1.3. The Ionosphere 1.4. The Protonosphere 1.5. The Plasmasphere 1.6. The Magnetosphere 1.7. Geomagnetic Storms 1.8. The Auroras 2. Experimental Techniques 2.1. Measuring the Thermosphere, Mesosphere, and Ionosphere 2.2. Measuring the Magnetosphere and Plasmasphere 3. Theoretical Studies from the Stratopause to the Magnetospaus...

Structure and rotations of the Hoyle state.

The excited state of the (12)C nucleus known as the "Hoyle state" constitutes one of the most interesting, difficult, and timely challenges in nuclear physics, as it plays a key role in the production of carbon via fusion of three alpha particles in red giant stars. In this Letter, we present ab initio lattice calculations which unravel the structure of the Hoyle state, along with evidence for ...

Watching the Hoyle State Fall Apart

W e are used to picturing atomic nuclei as smooth and spherical distributions of neutrons and protons. But the reality is often very different, and the carbon-12 nucleus provides the perfect case in point. In its ground state and some of its excited states, carbon’s six neutrons and six protons are thought to segregate into three clusters of two neutrons and two protons, otherwise known as heli...

Leadership Eric Hoyle

Towards the pair spectroscopy the Hoyle state

Although it is well established that the source of carbon in the universe is the 3 (triple–alpha) nuclear reaction occurring in stars, the rate at which this process occurs, via the Hoyle state in 12 C, is surprisingly poorly known. The current uncertainty of ~12.5% on the radiative width of the 7.654 MeV E0 and 3.215 MeV E2 transitions de-exciting the Hoyle state limits our understanding of s...