De　Broglie波的相速与群速

The phase velocity and group velocity of De Broglie wave

ＤｅＢｒｏｇｌｉｅ波的相速和群速是两类不同的速率，相速等于单色波传播速率，群速等于粒子运动速率．文中给出了相速与群速的一般关系．

The phase velocity and group velocity of De Broglie wave are two different kinds of veloci-ty,The phasc velocity equals the transmitting velocity of homogeneous wave,and the grotip velocityequals the moving velocity of molecule, Flnally the general relationship between phase velocity andgroup velocity is given.