August 12, 1953 : Soviets test “Layer-Cake” bomb

Introduction

Less than one year after the United States tested its first hydrogen bomb, the Soviets detonate a 400-kiloton device in Kazakhstan. The explosive power was 30 times that of the U.S. atomic bomb dropped on Hiroshima, and the mushroom cloud produced by it stretched five miles into the sky. Known as the “Layer Cake,” the bomb was fueled by layers of uranium and lithium deuteride, a hydrogen isotope. The Soviet bomb was smaller and more portable than the American hydrogen bomb, so its development once again upped the ante in the dangerous nuclear arms race between the Cold War superpowers.

Article Details:

August 12, 1953 : Soviets test “Layer-Cake” bomb

  • Author

    History.com Staff

  • Website Name

    History.com

  • Year Published

    2010

  • Title

    August 12, 1953 : Soviets test “Layer-Cake” bomb

  • URL

    http://www.history.com/this-day-in-history/soviets-test-layer-cake-bomb

  • Access Date

    November 21, 2017

  • Publisher

    A+E Networks