Zeptosecond contact times for element Z=120 synthesis

H. M. Albers; J. Khuyagbaatar; D. J. Hinde; I. P. Carter; K. J. Cook; M. Dasgupta; Ch E. Düllmann; K. Eberhardt; D. Y. Jeung; S. Kalkal; B. Kindler; N. R. Lobanov; B. Lommel; C. Mokry; E. Prasad; D. C. Rafferty; J. Runke; K. Sekizawa; C. Sengupta; C. Simenel; E. C. Simpson; J. F. Smith; P. Thörle-Pospiech; N. Trautmann; K. Vo-Phuoc; J. Walshe; E. Williams; A. Yakushev

doi:10.1016/j.physletb.2020.135626

Zeptosecond contact times for element Z=120 synthesis

H. M. Albers^*, J. Khuyagbaatar, D. J. Hinde, I. P. Carter, K. J. Cook, M. Dasgupta, Ch E. Düllmann, K. Eberhardt, D. Y. Jeung, S. Kalkal, B. Kindler, N. R. Lobanov, B. Lommel, C. Mokry, E. Prasad, D. C. Rafferty, J. Runke, K. Sekizawa, C. Sengupta, C. SimenelE. C. Simpson, J. F. Smith, P. Thörle-Pospiech, N. Trautmann, K. Vo-Phuoc, J. Walshe, E. Williams, A. Yakushev

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

The synthesis of new superheavy elements beyond oganesson (Z=118) requires fusion reactions with projectile nuclei with proton numbers larger than that of ⁴⁸Ca (Z=20), which has been successfully employed for the synthesis of elements with Z=112-118. In such reactions, fusion is drastically hindered by fast non-equilibrated dynamical processes. Attempts to produce nuclei with Z=120 using the ⁶⁴Ni+²³⁸U, ⁵⁸Fe+²⁴⁴Pu, ⁵⁴Cr+²⁴⁸Cm, and ⁵⁰Ti+²⁴⁹Cf reactions have been made, which all result in larger Coulomb forces than for ⁴⁸Ca-induced reactions, but no discovery has been confirmed to date. In this work, mass and angle distributions of fission fragments from these reactions have been measured with large angular coverage to aid in selection of the most promising projectile-target combination that would favor fusion. The results yield information on reaction contact times, with the longest exhibited by ⁵⁰Ti+²⁴⁹Cf.

Original language	English
Article number	135626
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	808
DOIs	https://doi.org/10.1016/j.physletb.2020.135626
Publication status	Published - 10 Sept 2020

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Albers, H. M., Khuyagbaatar, J., Hinde, D. J., Carter, I. P., Cook, K. J., Dasgupta, M., Düllmann, C. E., Eberhardt, K., Jeung, D. Y., Kalkal, S., Kindler, B., Lobanov, N. R., Lommel, B., Mokry, C., Prasad, E., Rafferty, D. C., Runke, J., Sekizawa, K., Sengupta, C., ... Yakushev, A. (2020). Zeptosecond contact times for element Z=120 synthesis. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 808, Article 135626. https://doi.org/10.1016/j.physletb.2020.135626

@article{89f42eb63584444d990dae87a578b1bd,

title = "Zeptosecond contact times for element Z=120 synthesis",

abstract = "The synthesis of new superheavy elements beyond oganesson (Z=118) requires fusion reactions with projectile nuclei with proton numbers larger than that of 48Ca (Z=20), which has been successfully employed for the synthesis of elements with Z=112-118. In such reactions, fusion is drastically hindered by fast non-equilibrated dynamical processes. Attempts to produce nuclei with Z=120 using the 64Ni+238U, 58Fe+244Pu, 54Cr+248Cm, and 50Ti+249Cf reactions have been made, which all result in larger Coulomb forces than for 48Ca-induced reactions, but no discovery has been confirmed to date. In this work, mass and angle distributions of fission fragments from these reactions have been measured with large angular coverage to aid in selection of the most promising projectile-target combination that would favor fusion. The results yield information on reaction contact times, with the longest exhibited by 50Ti+249Cf.",

keywords = "Quasifission, Superheavy-element formation, Z=120",

author = "Albers, {H. M.} and J. Khuyagbaatar and Hinde, {D. J.} and Carter, {I. P.} and Cook, {K. J.} and M. Dasgupta and D{\"u}llmann, {Ch E.} and K. Eberhardt and Jeung, {D. Y.} and S. Kalkal and B. Kindler and Lobanov, {N. R.} and B. Lommel and C. Mokry and E. Prasad and Rafferty, {D. C.} and J. Runke and K. Sekizawa and C. Sengupta and C. Simenel and Simpson, {E. C.} and Smith, {J. F.} and P. Th{\"o}rle-Pospiech and N. Trautmann and K. Vo-Phuoc and J. Walshe and E. Williams and A. Yakushev",

note = "Publisher Copyright: {\textcopyright} 2020 The Authors",

year = "2020",

month = sep,

day = "10",

doi = "10.1016/j.physletb.2020.135626",

language = "English",

volume = "808",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier B.V.",

}

Albers, HM, Khuyagbaatar, J, Hinde, DJ, Carter, IP, Cook, KJ , Dasgupta, M, Düllmann, CE, Eberhardt, K, Jeung, DY, Kalkal, S, Kindler, B, Lobanov, NR, Lommel, B, Mokry, C, Prasad, E, Rafferty, DC, Runke, J, Sekizawa, K, Sengupta, C, Simenel, C , Simpson, EC, Smith, JF, Thörle-Pospiech, P, Trautmann, N, Vo-Phuoc, K, Walshe, J, Williams, E & Yakushev, A 2020, 'Zeptosecond contact times for element Z=120 synthesis', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 808, 135626. https://doi.org/10.1016/j.physletb.2020.135626

TY - JOUR

T1 - Zeptosecond contact times for element Z=120 synthesis

AU - Albers, H. M.

AU - Khuyagbaatar, J.

AU - Hinde, D. J.

AU - Carter, I. P.

AU - Cook, K. J.

AU - Dasgupta, M.

AU - Düllmann, Ch E.

AU - Eberhardt, K.

AU - Jeung, D. Y.

AU - Kalkal, S.

AU - Kindler, B.

AU - Lobanov, N. R.

AU - Lommel, B.

AU - Mokry, C.

AU - Prasad, E.

AU - Rafferty, D. C.

AU - Runke, J.

AU - Sekizawa, K.

AU - Sengupta, C.

AU - Simenel, C.

AU - Simpson, E. C.

AU - Smith, J. F.

AU - Thörle-Pospiech, P.

AU - Trautmann, N.

AU - Vo-Phuoc, K.

AU - Walshe, J.

AU - Williams, E.

AU - Yakushev, A.

PY - 2020/9/10

Y1 - 2020/9/10

N2 - The synthesis of new superheavy elements beyond oganesson (Z=118) requires fusion reactions with projectile nuclei with proton numbers larger than that of 48Ca (Z=20), which has been successfully employed for the synthesis of elements with Z=112-118. In such reactions, fusion is drastically hindered by fast non-equilibrated dynamical processes. Attempts to produce nuclei with Z=120 using the 64Ni+238U, 58Fe+244Pu, 54Cr+248Cm, and 50Ti+249Cf reactions have been made, which all result in larger Coulomb forces than for 48Ca-induced reactions, but no discovery has been confirmed to date. In this work, mass and angle distributions of fission fragments from these reactions have been measured with large angular coverage to aid in selection of the most promising projectile-target combination that would favor fusion. The results yield information on reaction contact times, with the longest exhibited by 50Ti+249Cf.

AB - The synthesis of new superheavy elements beyond oganesson (Z=118) requires fusion reactions with projectile nuclei with proton numbers larger than that of 48Ca (Z=20), which has been successfully employed for the synthesis of elements with Z=112-118. In such reactions, fusion is drastically hindered by fast non-equilibrated dynamical processes. Attempts to produce nuclei with Z=120 using the 64Ni+238U, 58Fe+244Pu, 54Cr+248Cm, and 50Ti+249Cf reactions have been made, which all result in larger Coulomb forces than for 48Ca-induced reactions, but no discovery has been confirmed to date. In this work, mass and angle distributions of fission fragments from these reactions have been measured with large angular coverage to aid in selection of the most promising projectile-target combination that would favor fusion. The results yield information on reaction contact times, with the longest exhibited by 50Ti+249Cf.

KW - Quasifission

KW - Superheavy-element formation

KW - Z=120

UR - http://www.scopus.com/inward/record.url?scp=85088396683&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2020.135626

DO - 10.1016/j.physletb.2020.135626

M3 - Article

SN - 0370-2693

VL - 808

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

M1 - 135626

ER -

Zeptosecond contact times for element Z=120 synthesis

Abstract

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