Extraction of U(VI) and Th(IV) from nitric acid solutions with N,N,N′,N′-tetrahexylsuccinylamide

Wang, Y.-S.; Sun, Guoxin; Borong, Bao; Sun, Shenglei

doi:10.1007/bf02040277

Cited by 70 publications

(102 citation statements)

References 5 publications

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“…In order to interpret data on nuclear collisions from recent Relativistic Heavy Ion Collider (RHIC) experiments [ 1,2,3], it is obviously necessary to have knowledge of the initial conditions. Currently, there is an order of magnitude uncertainty in the initial produced gluon density, ρ g (τ 0 ) ∼ 10 − 100/fm 3 , in central Au + Au at √ s = 130 AGeV since widely different models [ 4,5] are consistent [ 6] with PHOBOS data [ 1]. We note that recent PHENIX data [ 3] appear to be inconsistent with at least one class (final state [ 5]) of gluon saturation models.…”

mentioning

confidence: 80%

“…The dependence of ∆E on the path length L(φ) naturally results in a pattern of azimuthal asymmetry of high p T hadrons which can be measured via the differential elliptic flow parameter (second Fourier coefficient), v 2 (p T ) [ 2]. In this letter, we predict v 2 (p T > 2 GeV) for two models of initial conditions [ 6] which differ by an order of magnitude. We first generalize the finite energy GLV theory [ 9] to take into account the expansion (neglected in [ 10,11]) of the produced gluon-dominated plasma while retaining kinematic constraints important for intermediate jet energies.…”

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confidence: 93%

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HighpTAzimuthal Asymmetry in NoncentralA+Aat RHIC

2001

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The high pT > 3 GeV azimuthal asymmetry, v2(pT), in non-central nuclear collisions at RHIC is shown to be a sensitive measure of the initial parton density distribution of the produced quark-gluon plasma. A generalization of the Gyulassy-Levai-Vitev (GLV) non-abelian energy loss formalism including Bjorken 1+1D expansion as well as important kinematic constraints is used.PACS numbers: 12.38. Mh; 24.85.+p; Introduction. In order to interpret data on nuclear collisions from recent Relativistic Heavy Ion Collider (RHIC) experiments [ 1,2,3], it is obviously necessary to have knowledge of the initial conditions. Currently, there is an order of magnitude uncertainty in the initial produced gluon density, ρ g (τ 0 ) ∼ 10 − 100/fm 3 , in central Au + Au at √ s = 130 AGeV since widely different models [ 4,5] are consistent [ 6] with PHOBOS data [ 1]. We note that recent PHENIX data [ 3] appear to be inconsistent with at least one class (final state [ 5]) of gluon saturation models. It is essential, however, to check this with other observables as well. High p T observables are ideally suited for this task because they provide a measure [ 4] of the total energy loss, ∆E, of fast partons, resulting from medium induced non-abelian radiation along their path [ 7,8]. For intermediate jet energies (E < 20 GeV), the predicted [ 9, 10] gluon energy loss in a static plasma of density ρ g and thickness, L is approximately ∆E GLV ∼ E(L/6 fm) 2 ρ g /(10/fm 3 ). The approximate linear dependence of ∆E on ρ g is the key that enables high p T observables to convey information about the initial conditions. However, ∆E also depends non-linearly on the geometry, L, of the plasma and therefore differential observables which have well controlled geometric dependences are also highly desirable.

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confidence: 80%

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confidence: 93%

HighpTAzimuthal Asymmetry in NoncentralA+Aat RHIC

2001

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“…The effective ∆E/E in this energy range is approximately constant [25]. It was also recently shown that the effect of gluon absorption is negligible for jet energies E ≥ 5µ ∼ 3 GeV [26]. In the above expression, transverse expansion can only be very crudely modeled taking α > 1.…”

Section: Energy Loss Of Jets In Transversely Expanding Mediummentioning

confidence: 99%

Transverse expansion and high pT azimuthal asymmetry at RHIC

et al. 2002

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“…So the energy loss per scattering ǫ in our model is now related to µ by In the spectra we also add the soft component in Eq. (3) with dn ch /dη = 520 (700) for √ s = 130 (200) GeV from HIJING calculations [24] and σ in = πb 2 max . We used a constant dE/dx = 0.5 GeV/fm and λ = 1 fm in the calculation to demonstrate the effect of parton energy loss.…”

Section: Hadron Spectra At Large Ptmentioning

confidence: 99%

Jet quenching and azimuthal anisotropy of largepTspectra in noncentral high-energy heavy-ion collisions

Wang

2001

Phys. Rev. C

144

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Parton energy loss inside a dense medium leads to the suppression of large pT hadrons and can also cause azimuthal anisotropy of hadron spectra at large transverse momentum in non-central high-energy heavy-ion collisions. Such azimuthal anisotropy is studied qualitatively in a parton model for heavy-ion collisions at the RHIC energies. The coefficient v2(pT ) of the elliptic anisotropy at large pT is found to be very sensitive to parton energy loss. It decreases slowly with pT contrary to its low pT behavior where v2 increases very rapidly with pT . The turning point signals the onset of contributions of hard processes and the magnitude of parton energy loss. The centrality dependence of v2(pT ) is shown to be sensitive to both size and density dependence of the parton energy loss and the later can also be studied via variation of the colliding energy. The anisotropy coefficient v2/ε normalized by the spatial ellipticity ε is found to decrease significantly toward semi-peripheral collisions, differing from the hydrodynamic results for low pT hadrons. Constrained by the existing WA98 experimental data at the SPS energy on parton energy loss, both hadron spectra suppression and azimuthal anisotropy at high pT are predicted to vanish for b >7-8 fm in Au + Au collisions at √ s =130-200 GeV when the hadron rapidity density per unit area of the initial overlapped region is less than what is achieved in the central P b + P b collisions at the SPS energy. 12.38.Mh, 24.85.+p,

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Extraction of U(VI) and Th(IV) from nitric acid solutions with N,N,N′,N′-tetrahexylsuccinylamide

Cited by 70 publications

References 5 publications

HighpTAzimuthal Asymmetry in NoncentralA+Aat RHIC

HighpTAzimuthal Asymmetry in NoncentralA+Aat RHIC

Transverse expansion and high pT azimuthal asymmetry at RHIC

Jet quenching and azimuthal anisotropy of largepTspectra in noncentral high-energy heavy-ion collisions

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