Who co-invented the device called Cyclotron in 1934 along with Ernest Lawrence to investigate the nuclear structure?

MS Livingston

The correct answer is option 3. MS Livingston.

The device called the Cyclotron was co-invented by Ernest Lawrence and M. Stanley Livingston in 1931, not 1934.

Ernest Lawrence, an American physicist, conceived the idea of the cyclotron in 1929 while he was a graduate student at the University of California, Berkeley. He then worked with M. Stanley Livingston, a colleague at Berkeley, to design and build the first working cyclotron prototype.

The cyclotron is a type of particle accelerator that uses electromagnetic fields to accelerate charged particles, such as protons or deuterons, to high energies in a circular path. This invention revolutionized experimental nuclear physics and led to significant advancements in understanding the structure of atomic nuclei.

M. Stanley Livingston played a crucial role in the construction and refinement of the cyclotron, working closely with Ernest Lawrence to bring the concept to fruition. Together, Lawrence and Livingston's collaboration resulted in the successful development of the cyclotron, which became an essential tool for nuclear research.

Therefore, the correct answer to the question is MS Livingston.