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Great question, nicely worded except I'm not sure what you mean be "trail".

If by "trail" you mean windblown fallout plume, then yes and usually much bigger because their yield is bigger.

Even though a fusion bomb is called a fusion bomb, the standard design generates about 90% of its yield from fission because the high energy fusion neutrons make the depleted uranium tamper fission, which also generates most of the bomb's fallout. In the 1956 Redwing series in the pacific, the US tested the world's first "clean" fusion bombs at Bikini atoll; 2 devices, 1 of which had as little as 5% of its yield from fission most of which was believed to be due to the fission trigger and the rest the fission "sparkplug". This reduced fallout dramatically, though the yield was also reduced and more lithium-deutride fuel was needed making the "clean" bomb more expensive than a standard one.

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13y ago
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Q: Do fusion bombs leave a trail of nuclear radiation like a fission bomb after they explode?
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