Word: nuclei
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Nuclear chain reactions, explosive or otherwise, produce four types of destructive radiation: 1) alpha rays (streams of high-speed helium nuclei;; 2) beta rays (beams of electrons); 3) gamma rays or X rays (high-frequency electromagnetic waves akin to light); 4) neutrons (subatomic particles with no electric charge...
Enclosed in a white-and-green building the shielded pile looked like a mighty concrete block. A red light warned that it was working. Behind the massive walls, a blizzard of darting neutrons was smashing atomic nuclei, creating hundreds of radioactive isotopes so "hot" that invisible specks of them could kill. All around were vigilant Geiger counters ready to raise the alarm if too much radiation leaked. But the only sound was the hum of the ventilating system carrying deadly gases up the stack...
Wind & Rain. To make sure it was not jumping at sensational conclusions, Eastman analyzed the strawboard. Chemists cut out bits of it which fogged X-ray film, and burned them. The ashes were strongly radioactive, shooting out beta rays (streams of electrons). They gave out no alpha rays (helium nuclei), thus proving that they were not the naturally radioactive elements: radium, uranium, or thorium. The only remaining possibility was that, the guilty particles came from the atomic bomb, were carried to the Middle West by the wind, and washed down by the rain. Six months after the explosion, they were...
With Harlow Shapley, Paine professor of Astronomy, as its principle catalyst, Boston's "Salute to the Atomic Age" flared up in the Hotel Bradford ballroom last night when Martin Deutsch, professor at M.I.T. exploded a few nuclei to add a realistic touch to the proceedings. Featured on the program besides Deutsch and Shapley were Rear Admiral H.G. Bowen, Rev. Edward Conway, and Louis Ridenour, professor at M.I.T...
...isotopes of an element have the same chemical properties. They differ only in the number of neutrons their nuclei contain...