FY06 LDRD Final Report "The Creation of a Neutron Star Atmosphere"

One of 95 reports in the series: Fiscal Year 2006 available on this site.

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Description

We have taken the initiative to examine whether experiments on HED facilities, present and future, could achieve the extreme scaled conditions relevant to accreting neutron star atmospheres and accretion disks around black holes. The preliminary conclusion from this detailed scaling assessment is that if an exact scaled version of the photon bubble instability physics is desired, this will require experiments with (simultaneously) spatial scales of order {approx}1 mm, temperatures of order {approx}5 keV, magnetic fields of order a hundred megaGauss, and time scales of order several hundred psec. Aspects (subsets) of this physics can be studied under less demanding conditions. ... continued below

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PDF-file: 35 pages; size: 1.2 Mbytes

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Klein, R I; Remington, B; Moon, S; MacKinnon, A; Patel, P; Ruytov, D et al. March 1, 2007.

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  • Main Title: FY06 LDRD Final Report "The Creation of a Neutron Star Atmosphere"
  • Series Title: Fiscal Year 2006

Description

We have taken the initiative to examine whether experiments on HED facilities, present and future, could achieve the extreme scaled conditions relevant to accreting neutron star atmospheres and accretion disks around black holes. The preliminary conclusion from this detailed scaling assessment is that if an exact scaled version of the photon bubble instability physics is desired, this will require experiments with (simultaneously) spatial scales of order {approx}1 mm, temperatures of order {approx}5 keV, magnetic fields of order a hundred megaGauss, and time scales of order several hundred psec. Aspects (subsets) of this physics can be studied under less demanding conditions. To achieve the temperatures required in targets of order several optical depths, we come to the preliminary conclusion that we would require an energy source that delivers of order of a megajoule of energy into a high Z target. A conceptual design for such an experiment could be to use the energy from a high gain ignition NIF capsule as our principle source of heating and acceleration whereby the target is in close proximity to the ignition capsule and then use external petawatt lasers to develop the magnetic fields required.

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PDF-file: 35 pages; size: 1.2 Mbytes

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  • Report No.: UCRL-TR-228633
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/902271 | External Link
  • Office of Scientific & Technical Information Report Number: 902271
  • Archival Resource Key: ark:/67531/metadc879270

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • March 1, 2007

Added to The UNT Digital Library

  • Sept. 22, 2016, 2:13 a.m.

Description Last Updated

  • Nov. 28, 2016, 6:17 p.m.

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Klein, R I; Remington, B; Moon, S; MacKinnon, A; Patel, P; Ruytov, D et al. FY06 LDRD Final Report "The Creation of a Neutron Star Atmosphere", report, March 1, 2007; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc879270/: accessed May 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.