Greenhouse Item
| Greenhouse Item | |
|---|---|
 | |
| Information | |
| Country | United States |
| Test series | Operation Greenhouse |
| Test site | Enewetak |
| Date | May 25, 1951 |
| Test type | Atmospheric |
| Yield | 45.5 kt |
| Test chronology | |
Greenhouse-Item was an American
Eniwetok Atoll in the Central Pacific Ocean. This test explosion was the first test of a boosted fission weapon
.
Description
In this test
kilotons
, about twice the yield of the unboosted bomb.
The device was code-named "Booster" in its development stages, a name for the mechanism coined by
U.S. Atomic Energy Commission
documents as early as 1947. The main problems in development were making modifications to the fission core to accept the gas correctly without reducing its own efficiency. The 1951 test was primarily to test the nuclear principles involved, and to gain research data, and it was not considered a design for a weaponizable device. Even as late as 1954, no boosted weapon had entered into the nuclear-weapons stockpile, and the only use for the Greenhouse Item nuclear test had been for its research results.
The "Booster" device was detonated at 6:17 am on May 25, 1951, from a 200-foot-tall (61 m) shot tower on the island of Engebi in the Enewetok Atoll, and its fusion fuel was injected by means of a cryogenic pump at the base of the tower.
Gallery
-
Item fireball. -
Device being raised upward towards its shot-tower. -
Preparing the "booster" for the test. -
The Item casing.
References
- Chuck Hansen, Swords of Armageddon, 1995, esp. "The Item Shot" in Volume III.
External links
- The short film Nuclear Test Film - Operation Greenhouse (1951) is available for free viewing and download at the Internet Archive.
- Operation Greenhouse at nuclearweaponarchive.org