Speculation: Highest yield nuclear weapons in existance

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Discussion Overview

The discussion revolves around the current state and historical context of nuclear weapons development, particularly focusing on the yield of the largest nuclear weapons, such as the Tsar Bomba. Participants speculate on advancements in technology since the Cold War and the implications of nuclear weapon yields in modern military strategy.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation
  • Speculative reasoning

Main Points Raised

  • Some participants note that since the Cold War, there has been little advancement in nuclear weapon technology, suggesting that most warheads have remained unchanged since the 1980s.
  • Others argue that the focus has shifted from creating larger bombs to developing multiple independently targetable reentry vehicles (MIRVs) and precision strikes.
  • A participant mentions that the energy from high-yield nuclear weapons primarily disperses upward and out of the atmosphere, questioning the effectiveness of such designs.
  • There is speculation about whether the Tsar Bomba could have yielded more than the reported 100 MT, with one participant suggesting that enhancements in design could significantly increase yield through fission reactions in the outer casing.
  • Some participants clarify that the DF-5 ICBM from China currently holds the title for the highest yield nuclear weapon, following the retirement of other high-yield warheads.
  • Concerns are raised about the limitations of increasing yield simply by adding more material, with some suggesting that there are inherent limits to bomb design that have been reached.

Areas of Agreement / Disagreement

Participants express a range of views on the advancements in nuclear weapons technology and the implications of bomb yields. There is no consensus on the potential for higher yields beyond the Tsar Bomba's reported capabilities, and the discussion remains speculative with competing perspectives on the effectiveness and purpose of large nuclear weapons.

Contextual Notes

Participants acknowledge that much of the information about nuclear weapon designs is historical and that firsthand knowledge may be limited due to the passage of time and secrecy surrounding such developments.

Krudus
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Since the cold war nuclear race we haven't really heard much about nuclear weapons development, but i imagine that the technology is pretty far ahead today compared to what it was when they detonated Tsar Bomba in 1961, which was a 50 mt. hydrogen bomb with a design that allowed 100 mt.

So i know that there is really no upper limit on a hydrogen bomb, but I am curious about what developments have been made in this field, and what yield the biggest bomb existing today has?
 
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Big bombs are just muscle-flexing and they don't really have much of a useful purpose. So I'm not sure anyone went any bigger. Most of our missiles have multiple warheads to hit multiple targets.
 
Yeah, the race to build bigger bombs was more of a pissing match than anything else. After the ridiculousness of Tsar Bomba, the focus was MIRVs and more accurate warheads. The various START treaties have reduced the scope of MIRVs so precision strike is the name of the game now.
 
most of the energy of high yield nuclear weapons goes upward and out of the atmosphere rather than in the directions you really want it to go.
 
Since the US B53 bomb is no longer operational, and the 25 megaton warhead for the Russian R-36 missile (SS-18) was retired, the honor goes to the People's Republic of China with their DF-5 ICBM.

http://en.wikipedia.org/wiki/DF-5
 
MadMike said:
China with their DF-5 ICBM.
Dongfeng. :smile:
 
Krudus said:
Since the cold war nuclear race we haven't really heard much about nuclear weapons development, but i imagine that the technology is pretty far ahead today compared to what it was when they detonated Tsar Bomba in 1961, which was a 50 mt. hydrogen bomb with a design that allowed 100 mt.

So i know that there is really no upper limit on a hydrogen bomb, but I am curious about what developments have been made in this field, and what yield the biggest bomb existing today has?

The total yield of a thermonuclear weapon isn't really dependent on the state of the technology used to create it. Consider dynamite. You can simply add more dynamite to get a larger explosion, to an extent. Improvements in technology mostly reduce the warhead in size for the same yield. The Tsar Bomba weapon was the largest nuclear weapon ever detonated and they made the decision to NOT detonate at its largest yield. It was somewhere around half of what it could have been. (Designed for up to 100 MT, actual detonation was reduced to 50 MT.)

Also, because of the immense negativity surround nuclear weapons (and the end of the Cold War) there hasn't been much advancement beyond about 80's technology. Most warheads have been around for decades.
 
A little mostly uninformed speculation here,

Would the full scale yield of the Tsar device be perhaps quite a bit in excess of 100MT?

My thinking is, (ignoring the fission trigger) in the device as tested, when the Pu stick reacts, it dumps an enormous flux of heat into the surrounding H, D, T, and Li which then starts fusing. The resulting blast was ~50MT.

In a full scale test, the outer casing would be DU instead of Pb. As the fusion reaction radiates neutrons, the DU will fission, and dump an enormous flux of heat back inwards into the fusion materials. There will be a significant increase in the thoroughness of that part of the burn, and a resulting and commensurate increase in the neutron flux into the DU layer. The intermediate fusion stage is significantly enhanced in the full scale device, and the tertiary fission stage will amplify the yield considerably.

I'm thinking the 100MT estimate is extremely conservative . . .
 
DaveC426913 said:
Dongfeng. :smile:
Good name for an ICBM. Dong-Bang would be even better.
 
  • #10
Drakkith said:
Consider dynamite. You can simply add more dynamite to get a larger explosion, to an extent.
The part I put in bold is rather important. As I understand it, you're already beyond that "to an extent limit" for even the very simplest atomic bomb.
 
  • #11
MadMike said:
Since the US B53 bomb is no longer operational, and the 25 megaton warhead for the Russian R-36 missile (SS-18) was retired, the honor goes to the People's Republic of China with their DF-5 ICBM.

http://en.wikipedia.org/wiki/DF-5
DF-5 (Dong Feng means Eastern Wind), is a missile, not a bomb.
 
  • #12
tasp77 said:
A little mostly uninformed speculation here...

I doubt anyone here can do more than idly speculate, that bomb was designed 50+ years ago behind the iron curtain, and anyone with firsthand knowledge is probably long dead. But published reports I've seen state the design yield was 100 MT, and I can't see any reason to doubt that given that none of us know how the thing worked.
 

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