Evaporation residue cross-section measurements for 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mmultiscripts><mml:mi mathvariant="normal">O</mml:mi><mml:mprescripts /><mml:none /><mml:mn>16</mml:mn></mml:mmultiscripts><mml:mo>+</mml:mo><mml:mmultiscripts><mml:mi>Tl</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>203</mml:mn><mml:mo>,</mml:mo><mml:mn>205</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math>

Gehlot, J.; Vinodkumar, A. M.; Madhavan, N.; Nath, S.; Jhingan, A.; Varughese, T.; Banerjee, Tathagata; Shamlath, A.; Laveen, P. V.; Shareef, M.; Jisha, P.; Devi, P.; Jyothi, G.; Hosamani, M. M.; Mazumdar, I.; Chepigin, V. I.; Chelnokov, M. L.; Yeremin, A. V.; Sinha, A. K.; Babu, B. R. S.

doi:10.1103/physrevc.99.034615

Cited by 11 publications

(4 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The σ ER depends on the specific entrance channel parameters (ECPs) z, χ m , η and α as mentioned above, which were defined in earlier papers (for example [19,20]). A slight change in the ECPs makes a large difference in the σ ER [26]. Such variations can be observed with the experimental σ ER versus any particular ECP, as shown for the cold fusion reactions in…”

Section: Role Of Entrance Channels On Er Formationsupporting

confidence: 62%

Rules of thumb for synthesizing superheavy elements

Manjunatha¹,

Vidya²,

Gupta³

et al. 2022

J. Phys. G: Nucl. Part. Phys.

View full text Add to dashboard Cite

Synthesizing any elements in the eighth period using either cold or hot fusion reactions remains a big challenge till date. Quasifission mechanism restricts complete fusion to an indeterminably low evaporation residue (ER) cross section for the superheavy nuclei. Entrance channel parameters of the heavy-ion reaction, fission barrier of compound nucleus, deformation parameters of the projectile and target nuclei, and the kinetic energy of the projectile are mostly responsible in governing the scales of the quasifission. Role of these factors has been examined explicitly by the experimental ER cross sections. Thorough comparisons lead us to infer that the entrance channel criteria contribute much lower extent than the deformation parameters do. The effect of deformation can be categorized into four rules as validated by all the reactions used except one $^{45}_{21}$Sc+$^{249}_{98}$Cf $\rightarrow ^{294}_{119}$Uue. Null result from this reaction is well explained by an improper choice of the projectile energy as shown theoretically by means of a statistical model approach, which is valid for a system having a large nucleon number so as to have intrinsically a high density of excited states. Optimal selection of the beam energy sets another rule. Therefore, these five rules can be treated as the rules of thumb for synthesizing the superheavy elements. Application of the first four rules can enable us to spot primarily a suitable reaction and finally exploitation of the fifth rule chooses the most appropriate reaction at a preferable excited energy to achieve the highest ER cross section for a superheavy element.

show abstract

Section: Role Of Entrance Channels On Er Formationsupporting

confidence: 62%

Rules of thumb for synthesizing superheavy elements

Manjunatha¹,

Vidya²,

Gupta³

et al. 2022

J. Phys. G: Nucl. Part. Phys.

View full text Add to dashboard Cite

show abstract

“…However, higher E * was used in the experiments for the synthesis of Z = 119 and 120. Origin of such action may be due to the fact that excitation function curves of heavy ion reactions show a saturation or slowly decreasing trend on σ ER with E cm at the region E cm > V B [34][35][36][37][38][39]. In contrast the excitation function curves of superheavy ion reactions exhibit a bell shaped nature as shown in Fig.…”

mentioning

confidence: 99%

Supremacy of optimal beam energy for synthesis of superheavy elements

Manjunatha,

Sowmya,

Gupta

et al. 2021

Preprint

View full text Add to dashboard Cite

“…Usually the experimental fission/ER cross-sections are fitted by reducing the fission barrier and thus consequently increasing the fission probability, in SM calculations [2,3,10]. However, an opposite requirement arises in the analyses of multiplicities of light particles and photons emitted by a compound nucleus (CN) prior to fission where it was early recognized that a fission hindrance is necessary to explain the experimental data [11].…”

Section: Introductionmentioning

confidence: 99%

Measurement of fission excitation function for ¹⁹F + ^{194, 196, 198}Pt reactions

Singh¹,

Behera²,

Kaur³

et al. 2021

J. Phys. G: Nucl. Part. Phys.

View full text Add to dashboard Cite

Experimental fission cross-sections are reported for the 19F + 194,196,198Pt reactions populating an isotopic chain of compound nuclei comprising both closed and non-closed shell nuclei. The fission cross-sections are obtained at near and above Coulomb barrier energies by measuring fission fragment angular distributions. The present work aims to estimate nuclear dissipation and find its isotopic and shell closure dependence from statistical model (SM) analysis of experimental data. Pre-scission neutron multiplicity data for the same systems is also included in the SM analysis. An updated version of SM is used in the present analysis, which includes shell corrections in level density and fission barrier as well as the effect of collective enhancement of level density and orientation effect of the compound nucleus along the symmetry axis. An isotopic dependence of the dissipation strength fitting the fission excitation functions is observed. The pre-scission neutron multiplicity, however, is underestimated by the SM.

show abstract

Evaporation residue cross-section measurements for O16+Tl203,205

Cited by 11 publications

References 51 publications

Rules of thumb for synthesizing superheavy elements

Rules of thumb for synthesizing superheavy elements

Supremacy of optimal beam energy for synthesis of superheavy elements

Measurement of fission excitation function for ¹⁹F + ^{194, 196, 198}Pt reactions

Contact Info

Product

Resources

About

Evaporation residue cross-section measurements for O16+Tl203,205

Cited by 11 publications

References 51 publications

Rules of thumb for synthesizing superheavy elements

Rules of thumb for synthesizing superheavy elements

Supremacy of optimal beam energy for synthesis of superheavy elements

Measurement of fission excitation function for 19F + 194, 196, 198Pt reactions

Contact Info

Product

Resources

About

Measurement of fission excitation function for ¹⁹F + ^{194, 196, 198}Pt reactions