LISE++: Radioactive beam production with in-flight separators

Tarasov, O.; Bazin, D.

doi:10.1016/j.nimb.2008.05.110

Cited by 437 publications

(321 citation statements)

References 37 publications

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“…Two of them passed through the chamber and were stopped outside the active volume, so that their decays could not be observed. This finding is consistent with an estimate, based on the LISE simulation program [22], that the thickness of the gaseous active volume of the chamber was equal to about 80% of the range distribution of 48 Ni ions. In each of the remaining eight events, the 48 Ni ion was stopped within the OTPC detector.…”

supporting

confidence: 91%

First observation of two-proton radioactivity inNi48

et al. 2011

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supporting

confidence: 91%

First observation of two-proton radioactivity inNi48

et al. 2011

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“…Beam energies for the excitation function measurements were varied using Al degraders of 0 (no degrader) 1.2, 2.25, 2.85, 3.45, 4.5, 5.1, and 6.29 μm thickness. All energy loss calculations were performed using the SRIM Stopping and Range Tables [25,26] as implemented in LISE++ [27]. The desired reaction products were tuned through MARS by estimating the most probable charge state in LISE++ using the method of Schiwietz and Grande [28].…”

Section: Experimental Methodsmentioning

confidence: 99%

Hot fusion-evaporation cross sections ofSc45-induced reactions with lanthanide targets

et al. 2015

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Background: 45 Sc has rarely been studied as a projectile in fusion-evaporation reactions. The synthesis of new superheavy elements with Z > 118 will require projectiles with Z > 20, and 45 Sc could potentially be used for this purpose.Purpose: Cross sections were measured for the xn and pxn exit channels in the reactions of 45 Sc with lanthanide targets for comparison to previous measurements of 48 Ca reacting with similar targets. These data provide insight on the survival of spherical, shell-stabilized nuclei against fission, and could have implications for the discovery of new superheavy elements. Methods:Beams of 45 Sc 6+ were delivered from the K500 superconducting cyclotron at Texas A&M University with an energy of ≈5 MeV/nucleon. Products were purified using the Momentum Achromat Recoil Spectrometer, and excitation functions were measured for reactions of 160 Gd, 159 Tb, and 162 Dy at five or more energies each. Evaporation residues were identified by their characteristic α-decay energies. Experimental data were compared to a simple theoretical model to study each step in the fusion-evaporation process. 2.4 + − , and 1.8 ± 0.6 μb, respectively. Proton emission competes effectively with neutron emission from the excited compound nucleus in most cases. The α, αn, and α2n products were also observed in the 45 Sc + 162 Dy reaction.Conclusions: Excitation functions were reported for 45 Sc-induced reactions on lanthanide targets for the first time, and these cross sections are much smaller than for 48 Ca-induced reactions on the same targets. The relative neutron-deficiency of the compound nuclei leads to significantly increased fissility and large reductions in the survival probability. Little evidence for improved production cross sections due to shell-stabilization was observed. PACS number(s): 25.70.Gh, 25.70.Jj

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“…The data are selected by requiring a coincidence with either a high-energy 3 H or 4 He particle for panels (a) and (b), respectively. The kinetic-energy spectra are not corrected for energy loss in the target; assuming that the reaction takes place in the center of the target, a 10 MeV 3 He particle loses approximately 480 keV, while a 5 MeV 3 H loses approximately 200 keV in the (CD 2 ) n with energy losses calculated according to the method described in [46] used in the codes SRIM [47] and LISE++ [48]. The peaks near E( 3 He)=10 MeV and E( 3 H)=5 MeV correspond to the ground states of 5 H and 5 He, respectively.…”

Section: Data Reductionmentioning

confidence: 99%

Ground-state properties ofH5from theHe6(d,
Wuosmaa
¹
,
Bedoor
²
,
Brown
³

et al. 2017
Phys. Rev. C
14
4
5
1
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We have studied the ground state of the unbound, very neutron-rich isotope of hydrogen 5 H, using the 6 He(d, 3 He) 5 H reaction in inverse kinematics at a bombarding energy of E( 6 He)=55A MeV. The present results suggest a ground-state resonance energy ER=2.4±0.3 MeV above the 3 H+2n threshold, with an intrinsic width of Γ=5.3±0.4 MeV in the 5 H system. Both the resonance energy and width are higher than those reported in some, but not all previous studies of 5 H. The previously unreported 6 He(d, t) 5 Heg.s. reaction is observed in the same measurement, providing a check on the understanding of the response of the apparatus. The data are compared to expectations from direct two-neutron and dineutron decay. The possibility of excited states of 5 H populated in this reaction is discussed using different calculations of the 6 He→ 5 H+p spectroscopic overlaps from shell-model and ab-initio nuclear-structure calculations.

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LISE++: Radioactive beam production with in-flight separators

Cited by 437 publications

References 37 publications

First observation of two-proton radioactivity inNi48

First observation of two-proton radioactivity inNi48

Hot fusion-evaporation cross sections ofSc45-induced reactions with lanthanide targets

Ground-state properties ofH5from theHe6(d,
Wuosmaa
¹
,
Bedoor
²
,
Brown
³

et al. 2017
Phys. Rev. C
14
4
5
1
View full text Add to dashboard Cite

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LISE++: Radioactive beam production with in-flight separators

Cited by 437 publications

References 37 publications

First observation of two-proton radioactivity inNi48

First observation of two-proton radioactivity inNi48

Hot fusion-evaporation cross sections ofSc45-induced reactions with lanthanide targets

Ground-state properties ofH5from theHe6(d,Wuosmaa1, Bedoor2, Brown3 et al. 2017Phys. Rev. C14451View full textAdd to dashboardCite

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Ground-state properties ofH5from theHe6(d,
Wuosmaa
¹
,
Bedoor
²
,
Brown
³

et al. 2017
Phys. Rev. C
14
4
5
1
View full text Add to dashboard Cite