Mark Andrew Hutchison

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The actual decay constant for neutral beryllium 7 (7 Be) is unknown because it has always been measured with a substantial loss of its 2s electrons due to bonding or interstitial effects. By considering free 7 Be ions (such as may appear in a low density non-neutral plasma) we can potentially calculate the electron charge density at the nucleus with more(More)
Axisymmetric radial Bernstein modes are known to exist in non-neutral plasmas and have been studied theoretically, but detection of these modes has still proven to be difficult due to self-shielding. While it is improbable that these modes will be detected in long systems, there is a possibility of exciting and detecting these modes in a finite-length(More)
Here we derive a Parker-wind like solution for a stratified, plane-parallel atmosphere undergoing photoioni-sation. The difference compared to the standard Parker solar wind is that the sonic point is crossed only at infinity. The simplicity of the analytic solution makes it a convenient test problem for numerical simulations of photoevaporation in(More)
  • Thomas J. Haworth, John D. Ilee, +18 authors Peter Woitke
  • 2016
The Protoplanetary Discussions conference—held in Edinburgh, UK, from 2016March 7th–11th—included several open sessions led by participants. This paper reports on the discussions collectively concerned with the multi-physics modelling of protoplanetary discs, including the self-consistent calculation of gas and dust dynamics, radiative transfer, and(More)
Midbrain dopamine neurons are crucial for many behavioral and cognitive functions. As the major excitatory input, glutamatergic afferents are important for control of the activity and plasticity of dopamine neurons. However, the role of glutamatergic input as a whole onto dopamine neurons remains unclear. Here we developed a mouse line in which(More)
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