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

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 ⁵⁰Ti

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

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Abstract

The ²⁴⁴Pu(⁵⁰Ti,xn)^294−xLv 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 ⁴⁸Ca. 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 ²⁹⁰Lv. The production cross section was measured to be σ_prod =0.44+0.58−0.28 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 ⁵⁰Ti and is an essential precursor in the pursuit of searching for new elements beyond Z = 118.

Original language	English
Article number	172502
Number of pages	8
Journal	Physical Review Letters
Volume	133
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.133.172502
Publication status	Published - 2024 Oct 21

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Subatomic Physics

Free keywords

Synthesis of new superheavy elements
Fusion evaporation reactions
Nuclear reactions
Nuclear physics

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10.1103/PhysRevLett.133.172502

PhysRevLett.133.172502Final published version, 484 KBLicence: CC BY
PhysRevLett.133.172502 - Supplemental MaterialFinal published version, 106 KBLicence: CC BY

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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 ⁵⁰Ti. Physical Review Letters, 133(17), Article 172502. https://doi.org/10.1103/PhysRevLett.133.172502

@article{7de393f17d7c4ccf885b21839f3baa65,

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

abstract = "The 244Pu(50Ti,xn)294−xLv reaction was investigated at Lawrence Berkeley National Laboratory{\textquoteright}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 48Ca. 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 290Lv. The production cross section was measured to be σprod =0.44+0.58−0.28 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 50Ti and is an essential precursor in the pursuit of searching for new elements beyond Z = 118.",

keywords = "Synthesis of new superheavy elements, Fusion evaporation reactions, Nuclear reactions, Nuclear physics",

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

year = "2024",

month = oct,

day = "21",

doi = "10.1103/PhysRevLett.133.172502",

language = "English",

volume = "133",

journal = "Physical Review Letters",

issn = "1079-7114",

publisher = "American Physical Society",

number = "17",

}

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, R-D, 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 ⁵⁰Ti', 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: Production of Livermorium (Z=116) with 50Ti

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 - 2024/10/21

Y1 - 2024/10/21

N2 - The 244Pu(50Ti,xn)294−xLv 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 48Ca. 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 290Lv. The production cross section was measured to be σprod =0.44+0.58−0.28 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 50Ti and is an essential precursor in the pursuit of searching for new elements beyond Z = 118.

AB - The 244Pu(50Ti,xn)294−xLv 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 48Ca. 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 290Lv. The production cross section was measured to be σprod =0.44+0.58−0.28 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 50Ti and is an essential precursor in the pursuit of searching for new elements beyond Z = 118.

KW - Synthesis of new superheavy elements

KW - Fusion evaporation reactions

KW - Nuclear reactions

KW - Nuclear physics

UR - https://physics.aps.org/articles/v17/150

UR - https://newscenter.lbl.gov/2024/07/23/a-new-way-to-make-element-116-opens-the-door-to-heavier-atoms/

UR - https://www.lu.se/artikel/lyckat-experiment-banar-vag-nytt-grundamne

UR - https://www.lunduniversity.lu.se/article/successful-experiment-paves-way-new-element

UR - https://www.scopus.com/pages/publications/85207292191

U2 - 10.1103/PhysRevLett.133.172502

DO - 10.1103/PhysRevLett.133.172502

M3 - Article

C2 - 39530806

SN - 1079-7114

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 ⁵⁰Ti

Abstract

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Investigation of the ²⁴⁴Pu(⁴⁸Ca,xn)^292-xFl reaction with the LBNL SHREC detector: Investigation of decay chains of isotopes of flerovium (Z = 114)

Research on superheavy elements: Experimental prospects

Source characterization of a detector for heavy and superheavy nuclei

Heavy Element Research at LBNL 88-Inch Cyclotron

Superheavy Element Research at Lawrence Berkeley National Laboratory

ChaSE Lundium: Characterization of New Superheavy Elements

Making and studying superheavy elements (NMT lecture)

Experimental Prospects for Research on Superheavy Elements

Lawrence Berkeley National Laboratory

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

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