# Isotope effect on blob-statistics in gyrofluid simulations of scrape-off layer turbulence

## TL;DR

This study examines how isotope mass influences blob dynamics in fusion plasma edge turbulence, using gyrofluid simulations and a stochastic model to analyze intermittent signals.

## Contribution

It demonstrates the isotope-dependent behavior of blob statistics and validates a shot-noise stochastic model against gyrofluid simulation data.

## Key findings

- Heavier isotopes lead to slower blob dynamics.
- The shot-noise model aligns well with simulation results.
- Blob statistics vary significantly with ion mass.

## Abstract

We investigate time-series obtained from gyrofluid simulations in coupled edge/scrape-off layer turbulence characteristic for fusion edge-region plasmas. Blob birth near the separatrix produces intermittent signals whose statistics depend on the ion mass of the reactor fuel, pointing towards overall slower dynamics for heavier isotopes. We find that a recently established shot-noise stochastic model for scrape-off layer fluctuations coincides reasonably well with the numerical simulations performed in this contribution.