| 单词 | potential well |
| 释义 | > as lemmaspotential well potential well n. Physics a region in a field of force in which the potential is significantly lower than at points immediately outside it, so that a particle in the region is likely to remain there unless it gains a relatively large amount of energy; spec. that in which an atomic nucleus is situated. ΘΚΠ the world > matter > physics > atomic nucleus > [noun] > region of lower potential potential well1935 square well1939 well1942 1931 G. Gamow Constit. Atomic Nuclei i. 18 The potential..must be more or less constant inside the nucleus and increase sharply at the boundary, the distribution forming a ‘potential hole’ of the shape shown.] 1935 Physical Rev. 47 852/1 The positive valued parameters A and α are to be determined to fit the binding energies of the deuteron and the alpha~particle. Evidently A and 1/α½ are directly proportional to the depth and breadth, respectively, of the potential well. 1972 C. H. DePuy & O. L. Chapman Molecular Reactions & Photochem. i. 1 Within this potential well the molecule can occupy any of a number of discrete vibrational energy levels. 2001 Nature 29 Mar. 531/3 The first gate lowers the Fermi level—the maximum energy of electrons in a solid—of the first island relative to that of the source electrode, creating a potential well and allowing one electron to tunnel through the insulating barrier into the island. < as lemmas |
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