- #1
bravoghost
- 7
- 0
I'm dealing with this problem for an MCAT review:
Following beta-emission by a neutral atom at rest, the respective linear momentums of the beta(-) particle and the resulting atom are shown below. (see attachment for message)
It wasn't too difficult to see that an extra force is in play, and gives the odd momentums of the beta(-) particle and the atom.
From the provided answers, the instructor immediately ruled out that an external electric field might be present. I thought this could be possible, however. If the resulting atom is neutral, then it could travel without its path being changed by the electric field. The negatively charged beta particle might be deflected, though - and could change its path upward as it is repulsed by the electric field lines.
If I'm wrong, I'm guessing the key word here is "linear" - since a negatively charged particle would curve as it accelerates through an electric field.
Following beta-emission by a neutral atom at rest, the respective linear momentums of the beta(-) particle and the resulting atom are shown below. (see attachment for message)
It wasn't too difficult to see that an extra force is in play, and gives the odd momentums of the beta(-) particle and the atom.
From the provided answers, the instructor immediately ruled out that an external electric field might be present. I thought this could be possible, however. If the resulting atom is neutral, then it could travel without its path being changed by the electric field. The negatively charged beta particle might be deflected, though - and could change its path upward as it is repulsed by the electric field lines.
If I'm wrong, I'm guessing the key word here is "linear" - since a negatively charged particle would curve as it accelerates through an electric field.
