Plasmas in machines with all metal plasma facing components have a lower Zeff. less radiation cooling in the scrape-off layer and divertor regions and are prone to impurity accumulation in the core. Higher gas puff and the seeding of low-Z impurities are applied to prevent impurity accumulation. to increase the frequency of edge localised modes and to cool the divertor. https://olivebookmarks.com/story19598926/an%C3%81lisis-de-la-disclosure-de-los-requerimientos-de-pagos-p%C3%9Ablicos-influencia-de-la-legislaci%C3%93n-y-fundamentos-de-la-teor%C3%8Da-contable