Open Notes

Thesis .A

Vincent Deguin

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Kinetics and Morphologie Changes of Amorphous Solid Water upon Crystalisation (and influence of an imuprity, ethane)

V. Deguin, A. Dawes (S. Green, R. Moat)

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Abstract

Water ice is ubiquitously present on the surface of interstellar dust grains and is thought to play a key role in the interstellar medium chemistry, where more than 200 molecules have been detected (PhD part 2 - this work). Ice is also a key ingredient enhancing aggregation of micrometre dust in protoplanetary disks (PhD part 1). Investigations of those processes rely on the production of laboratory analogues and have been an intense focus of research since the discovery of Amorphous Solid Water (ASW) in 1935 by Burton and Oliver obtained from water vapor deposition on a cold surface (< 70 K). Subsequent work has put into evidence the highly porous and metastable (with respect to the thermodynamically stable crystaline ice) structure of ASW. However, despite mentions of a glass transition, it is not yet clear how ASW transforms to crystalline ice. Having such knowledge is crucial with the launch of James Web Space Telescope (JWST), that will give scientists unprecedented spatial and spectral resolution that could potentially resolve the two polymorphs.

• Infrared Spectroscopy

• Resolve the OH stretching mode

• Well established Experiment

• New methodology - long isotherm scan to resolve subtle changes, kinetics over an extended period of time

• Presence of impurities will be investigated

Info

• Topics: Experimental Astrophysics, Astrochemistry

• Techniques: mid-IR Spectroscopy

• Job: PhD Part II - Stairway to Heaven

Tags: (insert)

Table of Content

Note

Explanation of the Hybrid format + link toward relevant page

• link to thesis pdf

» Science

• Overview
  
  

• Water Ice / Les Glaces d’Eau
  
  

  • Water Molecule

  • Condensed Phase

  • Water Models

  • Hexagonal Ice
    
    

• In Space / Dans l’Espace
  
  

  • Solar System

  • ISM & Observations

  • Interstellar Dust

  • Ice Mantle
    
    

• Is Amorphous / Sont Amorphes
  
  

  • Discovery / History

  • Bulk Properties

  • Surface Properties

  • Crystalisation
    
    

• and Mixed / Et Mixés
  
  

  • Molecules in Space

  • ASW + Molecules

  • Astrochemistry

  • ASW + Ethane
    
    
    

• Introduction (📖 Thesis)

Water Ice in Space is Amorphous and Mixed

Explanation

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» Methods

• Overview
  
  

• PAC
  
  

• IR Spectroscopy
  
  

  • Absorption

  • Interferometry
    
    
    

• Methods (📖 Thesis)

Methodology

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» Data

Note

• subject to evolution so intentionaly left blank for now

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Extra Material

Data 💥

Link to figshare (test with DR1_Full)

• DR1_Full

• DR2_Full

• DR3_Full

Interactive Notebooks 💥

• 

github link ?

Teaching 💥

• 

» Results

• Chapter 3 (📖 Thesis)
  
  

• Chapter 4 (📖 Thesis)
  
  

• Chapter 5 (📖 Thesis)
  
  

» Conclusion

• Conclusion (📖 Thesis)

My Corner

Daily Notes

Daily notes

• Day plans

• Stick outputs

• reviewed weekly with Anita

Monthly Dashboard

Implemented with major progress.

• Reviewed Weekly w/ Anita and

• Discuss w/ the whole supervision team at the end of the Month (then Archive).

Organisation

• Gant Charts

• To-do lists

• Productivity tools

• Admin

Lists

Note

No lists of abbreviation as will be directly described in the text:

Exemple: ASW

Figures

• Figure 1: Ice cycle

Tables

• Table 1: ASW Experiments

Equations

• my_label Equation 1

Comments

Notes

To Do

• Create intro video

Ideas

none

Collaboration

• Send to Friends to Review, comment

• Orthographique correction

Page

• Author: Vince;

• Status: ✅

• Reviewed: ❌

• Updated: 08/03/2023

Help

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