Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Can nuclear weapons explosion produce neutrino pluse ?

  1. Sep 6, 2009 #1
    Can nuclear weapons explosion produce "neutrino pluse"?

    Can nuclear weapons explosion produce "neutrino pluse"?
     
  2. jcsd
  3. Sep 6, 2009 #2

    clem

    User Avatar
    Science Advisor

    Re: Can nuclear weapons explosion produce "neutrino pluse"?

    Yes, but neutrinos are completely harmless.
     
  4. Sep 6, 2009 #3
    Re: Can nuclear weapons explosion produce "neutrino pluse"?

    Well, they are not _completely_ harmless, but energy released through conventional pathways is much more damaging than neutrinos.

    With nukes, you don't even have to worry (much) about direct gamma radiation. Any person close enough to the epicenter to suffer radiation sickness, will most likely get killed by the combination of the shockwave and infrared radiation.
     
  5. Sep 6, 2009 #4

    Astronuc

    User Avatar

    Staff: Mentor

    Re: Can nuclear weapons explosion produce "neutrino pluse"?

    To my knowledge, neutrinos are not generated during the fission process - just fission products (two nuclei), neutrons and gamma rays, and photons from X-rays to infrared as ionized atoms regain electrons (recombination). The neutrinos come afterward from the beta decays of the fission products - and that would be seconds, minutes, hours or days later (depending on the radionuclide).

    In a nuclear weapon, the fission reaction is over in a matter of microseconds, as it is prompt supercritical until the fissile material is dispersed (it vaporizes).

    Besides - neutrinos have a very low cross-section for interaction with matter.
     
  6. Sep 6, 2009 #5
    Re: Can nuclear weapons explosion produce "neutrino pluse"?

    don’t neutrinos pass through our body every second from the sun .
     
  7. Sep 6, 2009 #6
    Re: Can nuclear weapons explosion produce "neutrino pluse"?

    Thank you "Astronuc"^_^

    "Hydrogen Bomb" explosion can produce "neutrino pluse" ?
     
  8. Sep 6, 2009 #7
    Re: Can nuclear weapons explosion produce "neutrino pluse"?

    As we know,during ''core-collapse supernova"explosion, the hot temprature can produce numerous neutrinos and antineutrinos .During SN1987a, here we on earth detected them.

    During the nuclear explosion, the temprature is very very hot in the explosion center,if the temprature is hot enough to produce "neutrino-antineutrino" pairs(thermal neutrino)?
     
    Last edited: Sep 6, 2009
  9. Sep 6, 2009 #8

    Astronuc

    User Avatar

    Staff: Mentor

    Re: Can nuclear weapons explosion produce "neutrino pluse"?

    A hydrogen bomb explosion is also of a short duration - again in microseconds. The fusion (mostly d+t, but probably some d+d, assuming a D+T mixture) is initiated by the gamma/X-ray burst from a fission (trigger) explosion.

    The fusion reaction is short term, and I believe neutrinos are absent. d+t -> alpha + n, and d+d -> p + t or n + He3.


    A "core-collapse supernova" explosion takes place over days, so it is orders of magnitude greater than any thermonuclear explosion humans can achieve.
     
  10. Sep 6, 2009 #9

    Vanadium 50

    User Avatar
    Staff Emeritus
    Science Advisor
    Education Advisor

    Re: Can nuclear weapons explosion produce "neutrino pluse"?

    The neutrino production phase takes around 90 seconds. Neutrinos are produced through the process [itex]p + e^- \rightarrow n + \nu_e[/itex] as the core becomes a neutron star. (That's where the neutrons come from to make a neutron star). This process is negligible in nuclear explosions.

    You're absolutely right that the energies in SN are enormous. They are measured in units of 1051 ergs.
     
  11. Sep 9, 2009 #10

    Astronuc

    User Avatar

    Staff: Mentor

    Re: Can nuclear weapons explosion produce "neutrino pluse"?

    Thanks for the comment V. In terms of time, I was thinking that the core collapse takes places over days, as opposed to the nuclear reaction (p + e-) which is on the order of seconds. And SNs are enormous.

    Even the entire earth is neglible compared to our Sun.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Can nuclear weapons explosion produce neutrino pluse ?
  1. Nuclear Bomb explosion (Replies: 3)

Loading...