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A comment on Antiproton Orbiting Helium Ion. Parent comment

Re:Antiproton Orbiting Helium Ion by marcosdumay on Wednesday March 16, 2022 @02:36PM (#30702368)
It reaches the nucleus by a process of tunneling. You can never completely stop it, but it reacts exponentially to you increasing a barrier.
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Re:Antiproton Orbiting Helium Ion by jbay808 on Wednesday March 16, 2022 @04:49PM (#30703897)
An excited state isn't a barrier, it's a state with a higher energy than ground state. Several non-ground-state orbitals have a wavefunction whose amplitude drops to zero toward the centre.

An electron won't tunnel to a location where its wavefunction amplitude is zero.

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Re:Antiproton Orbiting Helium Ion by zardo on Thursday March 17, 2022 @01:43AM (#30708046)
Practical applications, a laser that explodes if you turn it off.
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