Researchers capture high-frequency oscillations in the gigantic eruption of a neutron star phys.org/news/2021-12-cap…
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πŸ‘€︎ u/Arditbicaj
πŸ“…︎ Dec 29 2021
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Researchers capture high-frequency oscillations in the gigantic eruption of a neutron star phys.org/news/2021-12-cap…
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πŸ‘€︎ u/Arditbicaj
πŸ“…︎ Dec 29 2021
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Researchers capture high-frequency oscillations in the gigantic eruption of a neutron star phys.org/news/2021-12-cap…
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πŸ‘€︎ u/Arditbicaj
πŸ“…︎ Dec 29 2021
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Researchers capture high-frequency oscillations in the gigantic eruption of a neutron star phys.org/news/2021-12-cap…
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πŸ‘€︎ u/DamnInteresting
πŸ“…︎ Dec 29 2021
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Did I happen to capture the best audio of Neutron Star Collision live? youtu.be/44UTMFD7awg
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πŸ‘€︎ u/wewantthecup
πŸ“…︎ Nov 02 2021
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Physicists Capture The Most Precise Measurement Yet of a Neutron's Lifespan sciencealert.com/this-is-…
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πŸ‘€︎ u/DamnInteresting
πŸ“…︎ Oct 13 2021
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in my previous capture I confused a white dwarf with a neutron star, now I have found one
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πŸ‘€︎ u/dvd1225
πŸ“…︎ Jul 26 2021
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Is it possible to capture the radiation from a Neutron Star (Magnetar in this case) and use it as an energy source?

Obviously with current technology this task is basically impossible, we don’t even have viable technology to build any kind of megastructures. However, could humanity one day in the far future build a megastructure similar to a Dyson Sphere (or swarm), and harness the power of a Neutron Star? (Magnetar in this case)

Just so I understand the process of the origin of neutron stars correctly, and overly simplify the process: when a larger star has its hydrogen exhausted, gravity wins the balance and tightens the core, forcing helium to fuse into heavier elements, until it reaches iron. Iron has no energy to give, so the core implodes in a supernova explosion. If gravity is too overwhelming, it creates a black hole. If the Star is small enough to fight gravity so that it doesn’t collapse into a black hole, it becomes a neutron Star. Newly formed neutron stars can start off as Magnetars.

I’ve learned that Magnetars can spin many times per second, and have an electromagnetic field a thousand trillion times stronger than earth’s. Not only is the neutron star extremely energetic, but it spews tons of radiation through its poles (correct?). Would it even be possible to capture this radiation and use it as energy? Would a Dyson Sphere (or swarm) be more efficient?

Sorry if my question(s) makes no logical sense or is plain stupid. I’m trying my best to wrap my head around these questions I have

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πŸ‘€︎ u/Grover-Rover
πŸ“…︎ Apr 28 2021
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ELI5: How exactly do control rods in a nuclear reactor capture neutrons and slow down the fission occurring?

A nuclear reactor is essentially just a metal barrel with a bunch of neutrons whizzing about and causing some metal to fission and release even more neutrons, right? So how does the addition of a non-metal such as boron or a metal like cadmium into steel prevent the atoms within the control rods from destabilized as well? Is it something to do with the molecular structures of the resulting alloys?

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πŸ‘€︎ u/AchievingNothing
πŸ“…︎ Feb 23 2021
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Gold and other heavy elements formed on Earth after neutron stars collided billions of years ago, through a process called "rapid neutron capture process". Ancient Aztecs believed that gold came from the sun, calling it the sun’s β€œsweat.” v.redd.it/p7ezwaeoh3b61
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πŸ‘€︎ u/Dum_Fuchs
πŸ“…︎ Jan 13 2021
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Record neutron numbers at Sandia Labs' Z machine fusion experiments - "Break-even is still two orders of magnitude away, but simulations that capture our experimental trends indicate another order of magnitude increase in yield is possible with additional increases of input parameters" phys.org/news/2020-10-neu…
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πŸ‘€︎ u/izumi3682
πŸ“…︎ Oct 28 2020
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Three years of staring lets scientists capture a neutron star β€œglitch”: For a fraction of a second, a pulsar stopped pulsing. arstechnica.com/science/2…
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πŸ‘€︎ u/Minovskyy
πŸ“…︎ Apr 11 2018
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[High School Chemistry: Isotopes] What is the difference between neutron bombardment, neutron capture, neutron activation and neutron irradiation?

I've been researching how isotopes are created and I keep coming across these terms, but I'm not sure what the difference between them all is, since they all seem to including bombarding a nucleus with a neutron.

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πŸ‘€︎ u/ohnolilian
πŸ“…︎ Mar 21 2020
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Boron neutron capture therapy only used in shallow tumors?

Title pretty much says it! As far as my research has shown, BNCT is mainly used in brain tumors and mouth and throat tumors, and sometimes other shallow tumors, such as melanoma or other skin cancer.

My guess is that anything faster than an epithermal neutron hurts tissue, but I'm not sure.

Thank you for any help!

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πŸ‘€︎ u/ravenous_bagel
πŸ“…︎ May 06 2019
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Why doesn't neutron scattering cause fission/neutron capture?
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πŸ‘€︎ u/vibe128
πŸ“…︎ Sep 13 2018
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Why does neutron capture by nitrogen-14 in the atmosphere lead to carbon-14 instead of nitrogen-15?

https://en.wikipedia.org/wiki/Carbon-14#Natural_production_in_the_atmosphere says "Carbon-14 is produced in the upper layers of the troposphere and the stratosphere by thermal neutrons absorbed by nitrogen atoms", the reaction being: n + N14 -> C14 + p.

Why doesn't this produce N15?

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πŸ‘€︎ u/andereandre
πŸ“…︎ Nov 02 2017
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What force causes nuclei to capture neutrons during Neutron activation?

Neutron activation is the process in which neutron radiation induces radioactivity in materials and occurs when atomic nuclei capture free neutrons, but what is the force that pulls in this neutron to the nucleus if they don't have a charge.

Thanks

EDIT: I know the Strong Force holds the nucleus together but what exactly is going on when a neutron is captured, it is simply that a neutron got close enough to a nucleus that the strong forced just kicked in? Is this typically what happens rather than a ricochet? What cause a ricochet vs a neutron capture?

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πŸ‘€︎ u/stretchmarx20
πŸ“…︎ May 15 2018
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The surprisingly large neutron capture cross-section of 88Zr - with nuclear security implications nature.com/articles/s4158…
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πŸ‘€︎ u/aaronmij
πŸ“…︎ Jan 14 2019
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Neutron Capture on ^(35)Cl: The Complex Structure of Nuclear Levels [OC]
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πŸ‘€︎ u/GammaLoaf
πŸ“…︎ Jul 25 2018
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Zirconium isotope a master at neutron capture phys.org/news/2019-01-zir…
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πŸ‘€︎ u/ZephirAWT
πŸ“…︎ May 31 2019
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[1901.01410] Making the Heaviest Elements in the Universe: A Review of the Rapid Neutron Capture Process arxiv.org/abs/1901.01410
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πŸ‘€︎ u/JRDMB
πŸ“…︎ Jan 10 2019
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The surprisingly large neutron capture cross-section of 88 Zr - with nuclear security implications nature.com/articles/s4158…
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πŸ‘€︎ u/ZephirAWT
πŸ“…︎ Jan 19 2019
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Why does an element, say Cadmium have a high neutron capture cross section?

I am aware that it is far from the magic numbers. Does this mean that it has a half filled shell, therefore making it more probable that it will capture a neutron?

I can't quite justify why that makes it more likely. Perhaps the outer shell requires a lower energy of incoming neutron to absorb it? ... Because the shell is half full?

Any clarity on the matter would be appreciated. Sorry for the confused post

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πŸ“…︎ Apr 13 2017
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Three years of staring lets scientists capture a neutron star β€œglitch” arstechnica.com/science/2…
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πŸ‘€︎ u/DamnInteresting
πŸ“…︎ Apr 11 2018
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The rapid neutron-capture process needed to build up many of the elements heavier than iron seems to take place primarily in neutron-star mergers, not supernova explosions. physicstoday.scitation.or…
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πŸ‘€︎ u/rhangetsu
πŸ“…︎ Jan 04 2018
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Physicists Reduce Measurement Uncertainty of Neutron Capture Rates in Highly Unstable Atoms by Factor of 10 physics.aps.org/synopsis-…
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πŸ‘€︎ u/DonQuesoDeLaVega
πŸ“…︎ Jun 21 2016
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The Other Nuclear Reaction: Neutron-capture reactions, responsible for the creation of most chemical elements, are being studied in detail for nuclear physics, nuclear technology, and national security. lanl.gov/discover/publica…
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πŸ‘€︎ u/eyeAmWaves
πŸ“…︎ Jun 09 2017
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NASA’s Chandra Captures X-Ray Echoes Pinpointing Distant Neutron Star northdenvernews.com/nasas…
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πŸ‘€︎ u/PriceTennSt
πŸ“…︎ Jun 24 2015
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Is neutron capture therapy widely used in the clinic to treat cancer these days? How about fast neutron therapy?

A quick google search doesn't really tell me much about the current state of boron neutron capture therapy or any other use of neutrons to treat cancer.

Are neutrons routinely used in cancer treatment? Do they just not have the proven advantages to take the place of IMRT, protons, or any other treatment modality?

Are there side-effects from neutrons that are worse than from other treatments?

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πŸ‘€︎ u/johnmyson
πŸ“…︎ Jan 17 2014
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Influence of Neutron Sources and 10B Concentration on Boron Neutron Capture Therapy for Shallow and Deeper Non-small Cell Lung Cancer journals.lww.com/health-p…
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πŸ‘€︎ u/montaukwhaler
πŸ“…︎ Feb 01 2017
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How does electron capture turn a proton into a neutron? And how does beta^- decay turn a neutron into a proton?

I know that protons are made of two up quarks and one down quark, and that neutrons are made of two down quarks and one up quark. When electron capture happens, it changes a proton into a neutron by (I assume) changing an up quark into a down quark. How can the electron, not being a quark, cause this? And how does a neutron turn into a proton by emitting an electron?

I also have two closely related question: During beta^- decay an electron is emitted as a neutron turns into a proton. Does this make the new element positively charged, assuming that it was neutral before the decay?

Is it possible for this emitted electron to be captured into an orbital, thus keeping the atoms charge constant?

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πŸ‘€︎ u/SwedishBoatlover
πŸ“…︎ Aug 14 2014
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COTD: Neutron capture in iridium nucleus can be seen to be atomic (11)
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πŸ‘€︎ u/zem
πŸ“…︎ Sep 18 2013
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NASA’s Chandra Captures X-Ray Echoes Pinpointing Distant Neutron Star nasa.gov/press-release/na…
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πŸ‘€︎ u/zac428
πŸ“…︎ Jun 23 2015
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What force causes nuclei to capture neutrons during Neutron activation?

Neutron activation is the process in which neutron radiation induce radioactivity in materials and occurs when atomic nuclei capture free neutrons, but what is the force that holds this neutrons to the nucleus if they don't have a charge?

Thanks

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πŸ‘€︎ u/stretchmarx20
πŸ“…︎ May 15 2018
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