We conducted methodological studies to evaluate the possibility of conducting experiments on gas release from pre-saturated samples on a plasma-beam installation. One of the tasks of obtaining reliable data on the parameters of the interaction of hydrogen isotope ions with materials of the NNR is to conduct methodically correct post-test experiments on the study of gas release from the investigated samples subjected to ion irradiation. The paper presents three stages of research. In the first

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... age, experiments were con-ducted on saturation and gas release with the sample from tungsten. At the second stage, experiments were performed with a tungsten sample on saturation with its deuterium and degassing under stepwise heating conditions. At the third stage, experiments were conducted on gas release with vanadium samples, with maximum sensitivity for dissolved gas in the sample. The results of calculations of the temperature field on the sample are presented. It is shown that, on the whole, it reflects the experimentally observed effect on a significant sample temperature gradient.