Postdoctoral Researcher (f/m/d)

The Emmy Noether Junior Group led by Dr. Brandt Gaches at the University of Duisburg-Essen is looking to hire a postdoctoral researcher to investigate the microphysics and chemistry of cosmic-ray interactions with icy dust grains. The group focuses on high-energy astrochemical processes, in particular the interaction of cosmic rays with dense molecular gas. The group uses a range of methods, in particular chemical modelling and theory. The group also leads the Astrochemistry Low-energy electron Cross-Section database.

The position is funded through the DFG-funded Emmy Noether group "Towards the next generation in cosmic-ray astrochemistry", hosted at the University of Duisburg-Essen.

### Start of employment

2

### Duration of employment

2 years

### Working time

39 h 50 min (100 %, part-time employment is possible)

### Your main tasks

As the postdoctoral researcher on this project, you will help build an atomic-scale understanding of the interaction of energetic particle irradiation with icy dust grains. Your work will include:

• calculating the energy deposition and electron distribution in icy mantles following particle irradiation
• using ab initio molecular dynamics simulations to quantitatively investigate chemistry immediately after particle irradiation
• characterising the chemical structure of the simulated irradiated ices and the composition of the desorbed gas-phase molecules
• perform a broad parameter study for different radiation particle types, ice mantle compositions, and ice thicknesses

The results of this research will lead to a significant increase in our understanding of the buildup of complex organic molecules via cosmic-ray irradiation.

### Your profile

• Must hold a PhD in astrophysics, physics, chemistry, or a relevant field by the start of the position
• Proficient knowledge of astrochemistry
• Excellent command of written and spoken English
• Proficient in C/C++ and/or Fortran
• Preferred: Experience in quantum chemistry methods, in particular ab initio molecular dynamics
• Preferred: Experience with the Geant4 physics package, or similar
• Preferred: A high degree of independence, self-initiative and creativity

### We offer you

• a position in the public sector with reliable working conditions in a varied, multifaceted field of work and in a research-intensive environment
• an interesting, meaningful role with significant scope for creativity
• an appealing work environment characterized by respectful and appreciative collaboration
• a diverse range of continuing education and professional development opportunities
• various canteens and cafés run by the Studierendenwerk on our campuses
• attractive discounts through Corporate Benefits
• a family-friendly university culture (e.g., childcare options, counselling for family caregiving responsibilities, etc.)
• a prime location and infrastructure with excellent public transportation access and free parking
• flexible working hours and the option to work from home
• 30 days of vacation with a 5-day workweek, plus additional days off on Christmas Eve and New Year’s Eve
• fair pay in accordance with the collective bargaining agreement (TV-L), including an annual bonus and a company-sponsored supplemental pension plan
• numerous sports and wellness programs (including university sports)

### Application deadline

2

### Code number

461-26

### Application

We look forward to receiving your digital application including the usual documents (motivation letter, CV, attachments). Please specify the reference number and submit your application to Dr. Brandt Gaches, Universität Duisburg-Essen, Fakultät für Physik, 47057 Duisburg, E-mail: [](mailto:).

### Information about the job

You can find information about the faculty and the unit offering the job at:

[https://www.uni-due.de/physik/index\_en.php](https://www.uni-due.de/physik/index_en.php)

[https://www.brandt-gaches.space/](https://www.brandt-gaches.space/)

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Posted Nov 01, 2026

Source: Statistisches Bundesamt (Destatis), table; dl-de/by-2-0; StarIn's calculation