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What is the state of matter inside stars and planets? Plasma physics at highest densities

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What is the state of matter inside stars and planets?Plasma physics at highest densities

WDM

Plasma in our universe

In our universe, almost all (<99%) of the visible matter, including stars and interstellar medium are plasma. Most of the plasma is at low density and can be investigated easily. But the interior of stars, giant planets and also our earth are made of an exotic state of matter, ranging from solid state to dense hot plasma.

Interior of our sun

Hydrogen at pressures around 300 Mbar and temperatures of 14 million degrees cause atoms to fuse - the ultimate energy source of our galaxy. Can we harvest this source on earth?

Giant Planets

We have discovered more than hundred planets in other stellar systems. But we don\'t know how the planets (e.g. Jupiter and Saturn) are built and where the magnetic field comes from.

Earth

What is the property of iron at pressures of Mbar and temperatures of thousands of degrees?

Technique

Exploring the equation of state of Warm Dense Matter (WDM)

Plasma - the fourth state of matter

Red separation line

109

ideal plasma

plasma temperature is dominant

vastly unknown particle correlation is important.

the transition region from "normal" matter to plasma

108

inertial fusion

magnetic fusion

non-ideal plasma

107

ideal plasma

Sun

(center)

Temperature [K]

106

warm dense matter

105

Lightnings

104

solar corona

If you can measure it: its NOT WDM

Jupiter

103

non-ideal plasma

solid state

density

human beings

102

If you can compute it: its NOT WDM

1015

1018

1021

1024

1027

1012

Density [particles/cc]

Why Heavy Ions?

- We must deposit the energy faster than the matter can expand
- Lasers can only heat the surface
- Heavy ions can heat large volumes in short times homogeneously

- Low gradients and background radiation allows for precise measurement
- Energy in the ion beam is precisely known
- There is a high repetition rate

The Hedgehob and WDM Collaborations: >350 physicists, 48 institutions in 15 countries

UCLM Ciudad Real

U Politecnica de Valencia

U Erlangen

U Rostock

U Bordeaux

U de Provence Marseille

LULI Paris

LBNL Berkeley

LLNL Livermore

LPI Moscow

LOA Palaiseau

LANL Los Alamos

LPGP Orsay

U Princeton U Belfast

SNL Sandia

U Darmstadt

TU München

U Tokio (TIT)

U Friedrich Schiller Jena

IHED Moscow

GSI Darmstadt

IOFM Shanghai

ILE Osaka

ITEP Moscow

ITMP Sarov

U Al-Farabi Kazakh

U Czech Technical

U Ernst-Moritz-Arndt Greifswald

CERN

VNIIEF

U Ludwigs Maximilian München

MPI Heidelberg

MPQ Garching

MIPT Moscow

MISDC Mendeleevo

ONU Odessa

PALS Prague

IPCP Chernogolovka

U Johann Wolfgang Goethe Frankfurt

KAIST Daejeon

KAERI Daejeon

KERI Changwon

U Milano

U of Nevada

WIS Revohot

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