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Date: 16-3-2016
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Date: 22-12-2016
1608
Date: 22-12-2016
1445
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X-ray and y-ray lasers
Due to the many applications of laser light it is, of course, highly desirable to build lasers with very short wave-lengths. With respect to the X-ray and y-ray region so far only proposals exist. Possible laser-active quantum systems could be excited atomic nuclei which can emit y-rays. With respect to resonators the principle of the distributed feedback laser has been suggested. Because of the factor v2 in the laser, the realization of such lasers seems to be very difficult, however.
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5 علامات تحذيرية قد تدل على "مشكل خطير" في الكبد
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لحماية التراث الوطني.. العتبة العباسية تعلن عن ترميم أكثر من 200 وثيقة خلال عام 2024
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