Toward the Discovery of New Elements: Production of Livermorium (Z=116) with Ti 50

J. M. Gates; R. Orford; D. Rudolph; C. Appleton; B. M. Barrios; J. Y. Benitez; M. Bordeau; W. Botha; C. M. Campbell; J. Chadderton; A. T. Chemey; R. M. Clark; H. L. Crawford; J. D. Despotopulos; O. Dorvaux; N. E. Esker; P. Fallon; C. M. Folden; B. J.P. Gall; F. H. Garcia; P. Golubev; J. A. Gooding; M. Grebo; K. E. Gregorich; M. Guerrero; R. A. Henderson; R. D. Herzberg; Y. Hrabar; T. T. King; M. Kireeff Covo; A. S. Kirkland; R. Krücken; E. Leistenschneider; E. M. Lykiardopoulou; M. McCarthy; J. A. Mildon; C. Müller-Gatermann; L. Phair; J. L. Pore; E. Rice; K. P. Rykaczewski; B. N. Sammis; L. G. Sarmiento; D. Seweryniak; D. K. Sharp; A. Sinjari; P. Steinegger; M. A. Stoyer; J. M. Szornel; K. Thomas; D. S. Todd; P. Vo; V. Watson; P. T. Wooddy

doi:10.1103/PhysRevLett.133.172502

Toward the Discovery of New Elements: Production of Livermorium (Z=116) with Ti 50

J. M. Gates, R. Orford, D. Rudolph, C. Appleton, B. M. Barrios, J. Y. Benitez, M. Bordeau, W. Botha, C. M. Campbell, J. Chadderton, A. T. Chemey, R. M. Clark, H. L. Crawford, J. D. Despotopulos, O. Dorvaux, N. E. Esker, P. Fallon, C. M. Folden, B. J.P. Gall, F. H. GarciaP. Golubev, J. A. Gooding, M. Grebo, K. E. Gregorich, M. Guerrero, R. A. Henderson, R. D. Herzberg, Y. Hrabar, T. T. King, M. Kireeff Covo, A. S. Kirkland, R. Krücken, E. Leistenschneider, E. M. Lykiardopoulou, M. McCarthy, J. A. Mildon, C. Müller-Gatermann, L. Phair, J. L. Pore, E. Rice, K. P. Rykaczewski, B. N. Sammis, L. G. Sarmiento, D. Seweryniak, D. K. Sharp, A. Sinjari, P. Steinegger, M. A. Stoyer, J. M. Szornel, K. Thomas, D. S. Todd, P. Vo, V. Watson, P. T. Wooddy

Nuclear Structure and Nuclear Astrophysi

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

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Abstract

The Pu244(Ti50,xn)Lv294-x reaction was investigated at Lawrence Berkeley National Laboratory's 88-Inch Cyclotron. The experiment was aimed at the production of a superheavy element with Z≥114 by irradiating an actinide target with a beam heavier than Ca48. Produced Lv ions were separated from the unwanted beam and nuclear reaction products using the Berkeley Gas-filled Separator and implanted into a newly commissioned focal-plane detector system. Two decay chains were observed and assigned to the decay of Lv290. The production cross section was measured to be σprod=0.44(-0.28+0.58) pb at a center-of-target center-of-mass energy of 220(3) MeV. This represents the first published measurement of the production of a superheavy element near the "island of stability,"with a beam of Ti50 and is an essential precursor in the pursuit of searching for new elements beyond Z=118.

Original language	English
Article number	172502
Journal	Physical Review Letters
Volume	133
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.133.172502
State	Published - Oct 25 2024

Funding

We gratefully acknowledge the operations staff of the 88-Inch Cyclotron for providing the intense beams of and stable operating conditions. This work was supported in part by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under Contracts No. DE-AC02-05CH11231 (LBNL), No. DE-AC02-06CH11357 (ANL), and No. DE-FG02-93ER40773 (TAMU); U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Contracts No. DE-AC02-05CH11231 (LBNL); the Swedish Knut and Alice Wallenberg Foundation (Grant No. KAW 2015.0021), the Wenner-Gren Foundations (Grant No. SSv2020-0003), the Carl Trygger Foundation (Grant No. CTS 20\u22361146), and the Royal Physiographic Society in Lund; UK Science and Technology Facilities Council under Grants No. ST/V001027/1 (Liverpool), No. ST/T004797/1, and No. ST/V001116/1 (Manchester); startup package from the Oregon State University College of Engineering; Office of Nuclear Regulatory Research, Nuclear Regulatory Commission under Grant No. 31310022M0019 (SJSU); U.S. Department of Energy under Contracts No. DE-AC52-07NA27344 (LLNL) and No. DE-AC05-00OR22725 (ORNL); Swiss National Science Foundation under Grant No. 200020_196981; CNRS research funds (IPHC). The authors are indebted (for the use of ) to the U.S. Department of Energy, through the transplutonium element production facilities at Oak Ridge National Laboratory.

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10.1103/PhysRevLett.133.172502

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Gates, J. M., Orford, R., Rudolph, D., Appleton, C., Barrios, B. M., Benitez, J. Y., Bordeau, M., Botha, W., Campbell, C. M., Chadderton, J., Chemey, A. T., Clark, R. M., Crawford, H. L., Despotopulos, J. D., Dorvaux, O., Esker, N. E., Fallon, P., Folden, C. M., Gall, B. J. P., ... Wooddy, P. T. (2024). Toward the Discovery of New Elements: Production of Livermorium (Z=116) with Ti 50. Physical Review Letters, 133(17), Article 172502. https://doi.org/10.1103/PhysRevLett.133.172502

@article{07f7483ef1e24f0abaa6721f0daafd68,

title = "Toward the Discovery of New Elements: Production of Livermorium (Z=116) with Ti 50",

abstract = "The Pu244(Ti50,xn)Lv294-x reaction was investigated at Lawrence Berkeley National Laboratory's 88-Inch Cyclotron. The experiment was aimed at the production of a superheavy element with Z≥114 by irradiating an actinide target with a beam heavier than Ca48. Produced Lv ions were separated from the unwanted beam and nuclear reaction products using the Berkeley Gas-filled Separator and implanted into a newly commissioned focal-plane detector system. Two decay chains were observed and assigned to the decay of Lv290. The production cross section was measured to be σprod=0.44(-0.28+0.58) pb at a center-of-target center-of-mass energy of 220(3) MeV. This represents the first published measurement of the production of a superheavy element near the {"}island of stability,{"}with a beam of Ti50 and is an essential precursor in the pursuit of searching for new elements beyond Z=118.",

author = "Gates, {J. M.} and R. Orford and D. Rudolph and C. Appleton and Barrios, {B. M.} and Benitez, {J. Y.} and M. Bordeau and W. Botha and Campbell, {C. M.} and J. Chadderton and Chemey, {A. T.} and Clark, {R. M.} and Crawford, {H. L.} and Despotopulos, {J. D.} and O. Dorvaux and Esker, {N. E.} and P. Fallon and Folden, {C. M.} and Gall, {B. J.P.} and Garcia, {F. H.} and P. Golubev and Gooding, {J. A.} and M. Grebo and Gregorich, {K. E.} and M. Guerrero and Henderson, {R. A.} and Herzberg, {R. D.} and Y. Hrabar and King, {T. T.} and {Kireeff Covo}, M. and Kirkland, {A. S.} and R. Kr{\"u}cken and E. Leistenschneider and Lykiardopoulou, {E. M.} and M. McCarthy and Mildon, {J. A.} and C. M{\"u}ller-Gatermann and L. Phair and Pore, {J. L.} and E. Rice and Rykaczewski, {K. P.} and Sammis, {B. N.} and Sarmiento, {L. G.} and D. Seweryniak and Sharp, {D. K.} and A. Sinjari and P. Steinegger and Stoyer, {M. A.} and Szornel, {J. M.} and K. Thomas and Todd, {D. S.} and P. Vo and V. Watson and Wooddy, {P. T.}",

note = "Publisher Copyright: {\textcopyright} 2024 American Physical Society.",

year = "2024",

month = oct,

day = "25",

doi = "10.1103/PhysRevLett.133.172502",

language = "English",

volume = "133",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "17",

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Gates, JM, Orford, R, Rudolph, D, Appleton, C, Barrios, BM, Benitez, JY, Bordeau, M, Botha, W, Campbell, CM, Chadderton, J, Chemey, AT, Clark, RM, Crawford, HL, Despotopulos, JD, Dorvaux, O, Esker, NE, Fallon, P, Folden, CM, Gall, BJP, Garcia, FH, Golubev, P, Gooding, JA, Grebo, M, Gregorich, KE, Guerrero, M, Henderson, RA, Herzberg, RD, Hrabar, Y, King, TT, Kireeff Covo, M, Kirkland, AS, Krücken, R, Leistenschneider, E, Lykiardopoulou, EM, McCarthy, M, Mildon, JA, Müller-Gatermann, C, Phair, L, Pore, JL, Rice, E, Rykaczewski, KP, Sammis, BN, Sarmiento, LG, Seweryniak, D, Sharp, DK, Sinjari, A, Steinegger, P, Stoyer, MA, Szornel, JM, Thomas, K, Todd, DS, Vo, P, Watson, V & Wooddy, PT 2024, 'Toward the Discovery of New Elements: Production of Livermorium (Z=116) with Ti 50', Physical Review Letters, vol. 133, no. 17, 172502. https://doi.org/10.1103/PhysRevLett.133.172502

TY - JOUR

T1 - Toward the Discovery of New Elements

T2 - Production of Livermorium (Z=116) with Ti 50

AU - Gates, J. M.

AU - Orford, R.

AU - Rudolph, D.

AU - Appleton, C.

AU - Barrios, B. M.

AU - Benitez, J. Y.

AU - Bordeau, M.

AU - Botha, W.

AU - Campbell, C. M.

AU - Chadderton, J.

AU - Chemey, A. T.

AU - Clark, R. M.

AU - Crawford, H. L.

AU - Despotopulos, J. D.

AU - Dorvaux, O.

AU - Esker, N. E.

AU - Fallon, P.

AU - Folden, C. M.

AU - Gall, B. J.P.

AU - Garcia, F. H.

AU - Golubev, P.

AU - Gooding, J. A.

AU - Grebo, M.

AU - Gregorich, K. E.

AU - Guerrero, M.

AU - Henderson, R. A.

AU - Herzberg, R. D.

AU - Hrabar, Y.

AU - King, T. T.

AU - Kireeff Covo, M.

AU - Kirkland, A. S.

AU - Krücken, R.

AU - Leistenschneider, E.

AU - Lykiardopoulou, E. M.

AU - McCarthy, M.

AU - Mildon, J. A.

AU - Müller-Gatermann, C.

AU - Phair, L.

AU - Pore, J. L.

AU - Rice, E.

AU - Rykaczewski, K. P.

AU - Sammis, B. N.

AU - Sarmiento, L. G.

AU - Seweryniak, D.

AU - Sharp, D. K.

AU - Sinjari, A.

AU - Steinegger, P.

AU - Stoyer, M. A.

AU - Szornel, J. M.

AU - Thomas, K.

AU - Todd, D. S.

AU - Vo, P.

AU - Watson, V.

AU - Wooddy, P. T.

PY - 2024/10/25

Y1 - 2024/10/25

N2 - The Pu244(Ti50,xn)Lv294-x reaction was investigated at Lawrence Berkeley National Laboratory's 88-Inch Cyclotron. The experiment was aimed at the production of a superheavy element with Z≥114 by irradiating an actinide target with a beam heavier than Ca48. Produced Lv ions were separated from the unwanted beam and nuclear reaction products using the Berkeley Gas-filled Separator and implanted into a newly commissioned focal-plane detector system. Two decay chains were observed and assigned to the decay of Lv290. The production cross section was measured to be σprod=0.44(-0.28+0.58) pb at a center-of-target center-of-mass energy of 220(3) MeV. This represents the first published measurement of the production of a superheavy element near the "island of stability,"with a beam of Ti50 and is an essential precursor in the pursuit of searching for new elements beyond Z=118.

AB - The Pu244(Ti50,xn)Lv294-x reaction was investigated at Lawrence Berkeley National Laboratory's 88-Inch Cyclotron. The experiment was aimed at the production of a superheavy element with Z≥114 by irradiating an actinide target with a beam heavier than Ca48. Produced Lv ions were separated from the unwanted beam and nuclear reaction products using the Berkeley Gas-filled Separator and implanted into a newly commissioned focal-plane detector system. Two decay chains were observed and assigned to the decay of Lv290. The production cross section was measured to be σprod=0.44(-0.28+0.58) pb at a center-of-target center-of-mass energy of 220(3) MeV. This represents the first published measurement of the production of a superheavy element near the "island of stability,"with a beam of Ti50 and is an essential precursor in the pursuit of searching for new elements beyond Z=118.

UR - http://www.scopus.com/inward/record.url?scp=85207292191&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.133.172502

DO - 10.1103/PhysRevLett.133.172502

M3 - Article

AN - SCOPUS:85207292191

SN - 0031-9007

VL - 133

JO - Physical Review Letters

JF - Physical Review Letters

IS - 17

M1 - 172502

ER -

Toward the Discovery of New Elements: Production of Livermorium (Z=116) with Ti 50

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