Monte Carlo modelling of TRM and CRM acquisition and comparison of their properties in an ensemble of interacting SD grains

Abstract

Numerical modelling of TRM and of Haigh's model of CRM acquisition was performed using the Monte‐Carlo method. It was confirmed that for noninteracting particles, i.e. at small volume concentration c < 1% CRM < TRM as was predicted earlier by Stacey and Banerjee and at large grain size, ≈ (0.1–0.2) µm, it may reach values ≈ (4–10)‥ However for strongly interacting systems, i.e. c > (l–3)%, CRM may be ≥ TRM, though CRM can not exceed TRM more than twice. The relative stability to thermodemagnetisation is always higher for TRM than for CRM.