Walther Bothe and Wilhelm Becker Discovered a New Kind of Particle

question 46

Multiple Choice

Walther Bothe and Wilhelm Becker discovered a new kind of particle radiation in 1930. The particle was later determined to be a neutron. Bothe and Becker generated neutron radiation by

• A) heating nuclei to extremely high temperatures to boil the neutrons off.
• B) using an isotope that decays by emitting neutrons.
• C) using electrons to attract protons away from the nucleus.
• D) firing a beam of alpha particles at a beryllium target.

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