What are the cases in which artificial insemination is prohibited, and is it permissible for a wife to undergo it using her husband's sperm if he is traveling?

It is not permissible for a woman to undergo an in vitro fertilization (IVF) procedure due to her husband's travel, because the procedure was permitted out of necessity, and there is no necessity here, as the husband can return for insemination or the wife can travel to him.