Join a 50-minute webinar exploring the impact of cosmic rays on astrochemical models, presented by Dr. Christopher Shingledecker through AVS Knights. Discover how ionizing radiation, including cosmic rays, stellar winds, x-rays, and gamma-rays, influences the physicochemical properties of interstellar environments. Learn about the formation of complex and prebiotic molecules through the interaction between energetic particles and low-temperature ices, while understanding the challenges in modeling cosmic ray collisions with interstellar dust grain ice mantles. Explore recent research developments and their applications in understanding interstellar space chemistry, presented by an Alexander von Humboldt Foundation postdoctoral research fellow with extensive experience in theoretical computational astrochemistry. Delve into topics such as extraterrestrial radiation, cosmic ray composition, energy distribution, and their effects on ice composition, while examining innovative approaches like the CIRIS model for simulating radiation chemistry in astrochemical environments.
Overview
Syllabus
Intro
Extraterrestrial Radiation The First Hint
Confirmation of Extraterrestrial Origin
Evidence of Extraterrestrial Origin
The Origin of the name "Cosmic Ray"
The Nature of Cosmic Rays
Composition of Cosmic Rays
Where Do Cosmic Rays Come From?
Cosmic Ray Energy Distribution
Cosmic Rays in the Interstellar Medium
Rock
Murchison Meteorite
How does irradiation change the ice composition?
Ionizing Radiation "Tracks"
Monte Carlo Models
Part IV
A new model of the chemistry of ionizing radiation in solids: CIRIS
CIRIS Algorithm
Experimental Physical Conditions
An Initial Attempt at Simulating Particle Tracks
CIRIS Data
A general method for the inclusion of radiation chemistry in astrochemical models
Back Cover Design
The Importance of Excited Species at Low Temperatures
Step 1: Elementary Processes
Step 2
Rate Coefficients
Bulk Chemistry Like the surface, but slower?
Radicals In Ices An Extreme Scenario
Bulk Chemistry: Unlike the surface and faster?
Shingledecker et al. (2019)
Taught by
AVS Knights
