Charged-particle spectroscopy for diagnosing shock ρR and strength in NIF implosions

Zylstra, A. B.; Frenje, J. A.; Séguin, F. H.; Rosenberg, M. J.; Rinderknecht, H. G.; Johnson, M. Gatu; Casey, D. T.; Sinenian, N.; Manuel, M. J.-E.; Waugh, C. J.; Sio, H. W.; Li, C. K.; Petrasso, R. D.; Friedrich, S.; Knittel, K.; Bionta, R.; McKernan, M.; Callahan, D.; Collins, G. W.; Dewald, E.
October 2012
Review of Scientific Instruments;Oct2012, Vol. 83 Issue 10, p10D901
Academic Journal
The compact Wedge Range Filter (WRF) proton spectrometer was developed for OMEGA and transferred to the National Ignition Facility (NIF) as a National Ignition Campaign diagnostic. The WRF measures the spectrum of protons from D-3He reactions in tuning-campaign implosions containing D and 3He gas; in this work we report on the first proton spectroscopy measurement on the NIF using WRFs. The energy downshift of the 14.7-MeV proton is directly related to the total ρR through the plasma stopping power. Additionally, the shock proton yield is measured, which is a metric of the final merged shock strength.


Related Articles

  • Diagnosing radiative shocks from deuterium and tritium implosions on NIF. Pak, A.; Divol, L.; Weber, S.; Döppner, T.; Kyrala, G. A.; Kilne, J.; Izumi, N.; Glenn, S.; Ma, T.; Town, R. P.; Bradley, D. K.; Glenzer, S. H. // Review of Scientific Instruments;Oct2012, Vol. 83 Issue 10, p10E507 

    During the recent ignition tuning campaign at the National Ignition Facility, layered cryogenic deuterium and tritium capsules were imploded via x-ray driven ablation. The hardened gated x-ray imager diagnostic temporally and spatially resolves the x-ray emission from the core of the capsule...

  • Guided ion beam studies of the reactions of Ni[sub n][sup +] (n=2–18) with O[sub 2]: Nickel cluster oxide and dioxide bond energies. Vardhan, Dinesh; Liyanage, Rohana; Armentrout, P. B. // Journal of Chemical Physics;8/22/2003, Vol. 119 Issue 8, p4166 

    The kinetic energy dependences of the reactions of Ni[sub n][sup +] (n=2–18) with O[sub 2] are studied in a guided ion beam tandem mass spectrometer. A variety of Ni[sub m]O[sub 2][sup +], Ni[sub m]O[sup +], and Ni[sub m][sup +] product ions, where m≤n, are observed, with the...

  • Quantum statistical approach to dense, weakly coupled plasmas. Vorberger, J.; Schlanges, M.; Kraeft, W.-D. // AIP Conference Proceedings;2004, Vol. 731 Issue 1, p248 

    We present a quantum equation of state (EOS) which is applicable to weakly coupled systems of any density and temperature. As an example, we consider the EOS of hydrogen. We include strong ion-ion correlations through HNC-calculations. We study the influence of correlation effects on the mean...

  • Gamma-ray emission from microquasar jets/ISM interaction. Bordas, P.; Paredes, J. M.; Bosch-Ramon, V. // AIP Conference Proceedings;12/24/2008, Vol. 1085 Issue 1, p297 

    The high kinetic energy outflowing in the jets of microquasars is delivered to the surrounding interstellar medium. This energy input can lead to the formation of bow shocks and cocoons that may emit from radio to gamma-ray energies. Evidence and hints of emission from jet/medium interactions...

  • MEASUREMENTS ON THE ³He+η SYSTEM AT ANKE. KHOUKAZ, ALFONS // Acta Physica Polonica B;Oct2010, Vol. 41 Issue 10, p2271 

    No abstract available.

  • Guided ion beam studies of the reactions of Fe+n (n=2–15) with D2: Cluster–deuteride bond energies as a chemical probe of cluster structures. Conceição, J.; Loh, S. K.; Lian, L.; Armentrout, P. B. // Journal of Chemical Physics;3/15/1996, Vol. 104 Issue 11, p3976 

    The kinetic energy dependencies of the reactions of Fe+n (n=2–15) with D2 are studied in a guided ion beam mass spectrometer. The only products observed are FenD+ (n=2–15) and FenD+2 (n=9–15). All reactions are observed to exhibit thresholds, except for formation of Fe9D+2....

  • Collision-induced dissociation studies of FemOn+ : Bond energies in small iron oxide cluster cations, FemOn+ (m=1–3, n=1–6). Ming Li; Shu-Rong Liu; Armentrout, P. B. // Journal of Chemical Physics;10/14/2009, Vol. 131 Issue 14, p144310 

    A variety of iron oxide cluster cations is synthesized in a laser vaporization ion source. The kinetic energy dependence of the collision-induced dissociation (CID) of mass selected FemOn+ (m=1–3, n=1–6) clusters with Xe is studied in this work using a guided ion beam tandem mass...

  • Mechanisms and dynamics of the metastable decay in Ar2+. Fedor, J.; Gluch, K.; Parajuli, R.; Matt-Leubner, S.; Echt, O.; Scheier, P.; Märk, T. D. // Journal of Chemical Physics;10/15/2004, Vol. 121 Issue 15, p7253 

    A detailed experimental as well as theoretical investigation of the properties of the metastable dissociation Ar2+→Ar++Ar is presented. The mass-analyzed ion kinetic energy (MIKE) scan technique has been performed using a three sector field mass spectrometer. The possible mechanisms of...

  • Cross sections and product kinetic energy analysis of H2O+–H2O collisions at suprathermal energies. Lishawa, C. Randal; Dressler, Rainer A.; Gardner, James A.; Salter, Richard H.; Murad, Edmond // Journal of Chemical Physics;9/1/1990, Vol. 93 Issue 5, p3196 

    The reaction of H2O+ with H2O is studied using a longitudinal geometry double mass spectrometer in the collision energy range Ec.m.=0.5–25 eV. Cross sections are reported for oxonium ion (H3O+) production and the symmetric charge exchange. Isotopic substitution is used to discern the...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics