Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Friedemann T. Freund is active.

Publication


Featured researches published by Friedemann T. Freund.


The Astrophysical Journal | 2006

Solid Solution Model for Interstellar Dust Grains and Their Organics

Minoru M. Freund; Friedemann T. Freund

We present a dust grain model based on the fundamental principle of solid solutions. The model is applicable to the mineral (silicate) component of the dust in the interstellar medium (ISM). We show that nanometer-sized mineral grains,which condense inthe gas-rich outflowof late-stage stars or expandinggas shellsofsupernova explosions,do notconsistof justhighmeltingpointoxidesorsilicates. Insteadtheyformsolidsolutionswithgas-phasecomponents H2O, CO, and CO2 that are omnipresent in environments where the grains condense. Through a series of thermodynamically well-understood solid-state processes, these solid solutions beco me ‘‘parents’’ of organic matter that precipitates inside the grains. Thus, the mineral dust grains and their organics become part of the same thermodynamicallydefinedsolidphaseand,hence,physicallyinseparable.Thismodelcanaccountformanyastronomical observations,whichnopriormodelcanadequatelyaddress,specifically:(1)OrganicsinthediffuseISMareidentified


Archive | 2002

Mid-Infrared Luminescence Observed During Rock Deformation

Friedemann T. Freund; Murzy D. Jhabvala; Anh T. La; Peter K. Shu; S. S. Tsay; D. P. Ouzounov; Fei Yu


American chemical society. National meeting. 196 | 1990

Dissociation and recombination of positive holes in minerals

Friedemann T. Freund; Francois Batllo; Minoru M. Freund


Archive | 2002

Mid-Infrared Radiation, Electric Charges, and Acoustic Emission During Rock Deformation

Friedemann T. Freund; D. P. Ouzounov; Minoru M. Freund; Zongru Wan; Qi Jun Zhang; Y.-Q. Zhang; Murzy D. Jhabvala; Anh T. La; M. McClare; A. M. Velle; Fei Yu; S. S. Tsay


Archive | 1989

METHOD AND APPARATUS FOR CHARGE DISTRIBUTION ANALYSIS.

Friedemann T. Freund; Francois Batllo; Minoru M. Freund


Archive | 2012

What we Know and don't Know about Positive Hole Charge Carriers and their Role in Generating Pre-Earthquake Phenomena

Friedemann T. Freund; Minoru M. Freund


Archive | 2006

Rocks Generate Electric Currents in a Temperature Gradient

Michelle McMillan; Friedemann T. Freund


Archive | 2005

Satellite Infrared Radiation Measurements Prior to the Major Earthquakes

Dimitar Ouzounov; S. Pulintes; Nevin Bryant; Patrick T. Taylor; Friedemann T. Freund


Archive | 2004

Water in Olivine - not a Simple Question

S. A. Bansal; J. Thomas Dickinson; Friedemann T. Freund


Archive | 2004

Stimulated Mid-Infrared Luminescence Experiment: Contribution to the Study of Pre-Earthquake Phenomena and UV Absorption by Interstellar Dust

Friedemann T. Freund; Minoru M. Freund; Si-Chee Tsay; D. P. Ouzounov

Collaboration


Dive into the Friedemann T. Freund's collaboration.

Top Co-Authors

Avatar
Top Co-Authors

Avatar

Anh T. La

Goddard Space Flight Center

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Murzy D. Jhabvala

Goddard Space Flight Center

View shared research outputs
Top Co-Authors

Avatar

John Scoville

San Jose State University

View shared research outputs
Top Co-Authors

Avatar

Nevin Bryant

Jet Propulsion Laboratory

View shared research outputs
Top Co-Authors

Avatar

Patrick T. Taylor

Goddard Space Flight Center

View shared research outputs
Top Co-Authors

Avatar

Peter K. Shu

Goddard Space Flight Center

View shared research outputs
Top Co-Authors

Avatar

Dimitar Ouzounov

Centre national de la recherche scientifique

View shared research outputs
Top Co-Authors

Avatar
Researchain Logo
Decentralizing Knowledge