[填空题]
The neutrons in a parallel beam, eayo98s8 w.s t 0;swbfhych havinxfm4 sq 9(,cxfg kinetic energy $0.40 \, \text{eV}$ are directed through two slits $0.50 \, \text{mm}$ apart. How far apart will the interference peaks be on a screen $1.0 \, \text{m}$ away? [Hint: First find the wavelength of the neutron.]
$\Delta y$ = $ \times 10^{-7}\ \text{m}$
