Which mechanism causes alpha particle emission when uranium-238 decays?

💡 Explanation

Alpha particles escape the nucleus via quantum tunneling, because the wave function has a small but non-zero probability outside the nuclear potential. Therefore, alpha decay occurs, rather than spontaneous fission or other decay modes, which require overcoming larger energy barriers.

• Which outcome results in a microfluidic device when its Reynolds number reaches 2500?
• Which mechanism causes interference fringes during thin film reflection?
• Which mechanism limits the strength of covalent bonds in polymer fibers under tension?
• Which risk increases near flash memory cells when write voltages scale down?
• Which phenomenon limits electron microscope resolution when imaging biological macromolecules at cryogenic temperatures?
• Which physical outcome arises when hydrostatic pressure increases on crystal?