Predicted masses and excitation energies in higher isospin multiplets for 9 ⩽ A ⩽ 60

Antony, M. S.; Britz, J.; Pape, A.

doi:10.1016/0092-640x(86)90005-7

Cited by 41 publications

(11 citation statements)

References 13 publications

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“…A recent compilation of ground and excited IAS can be found in the appendix of reference [17] and is an update to the extensive work of M.S. Antony and A. Pape [18,19,20,21].…”

Section: Data Selectionmentioning

confidence: 99%

Evaluated experimental isobaric analogue states from T=1/2 to T=3 and associated IMME coefficients

MacCormick

Audi

2014

Nuclear Physics A

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Isobaric multiplets can be used to provide reliable mass predictions through the Isobaric Multiplet Mass Equation (IMME). Isobaric analogue states (IAS) for isospin multiplets from T = 1/2 to 3 have been studied within the 2012 Atomic Mass Evaluation (Ame2012). Each IAS established from published experimental reaction data has been expressed in the form of a primary reaction Q-value and, when necessary, has been recalibrated. The evaluated IAS masses are provided here along with the associated IMME coefficients. Quadratic and higher order forms of the IMME have been considered, and global trends have been extracted. Particular nuclides requiring experimental investigation have been identified and discussed. This dataset is the most precise and extensive set of evaluated IAS to date.

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“…A recent compilation of ground and excited IAS can be found in the appendix of reference [17] and is an update to the extensive work of M.S. Antony and A. Pape [18,19,20,21].…”

Section: Data Selectionmentioning

confidence: 99%

Evaluated experimental isobaric analogue states from T=1/2 to T=3 and associated IMME coefficients

MacCormick

Audi

2014

Nuclear Physics A

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“…We get a value of t = (0.94 ± 0.20) s. If we compare this value to our measured half-life of (40.7 ± 0.4) ms, we obtain a branching ratio of (4.3±1.0)%. Using the Coulomb-displacement systematics [24] and the extrapolated ground-state mass excess of 23 Si [25], the mass excess of the IAS in 23 Al is calculated to be 18.74 MeV which corresponds to an excitation energy of 11.97 MeV. The decay of this level by proton emission to the ground state in 22 Mg releases at total energy of 11.85 MeV.…”

Section: Discussion Of the Experimental Resultsmentioning

confidence: 99%

“…According to shell-model calculations [27], this level is at an ecitation energy of 11.59 MeV. Antony et al [24] calculated a mass excess of 18.4 MeV for the IAS in 23 Al. However, their calculation yields a somewhat smaller mass for 23 Si as compared to the extrapolation by Audi and Wapstra in the 1993 Atomic Mass Tables [25].…”

Section: Discussion Of the Experimental Resultsmentioning

confidence: 99%

“…It turned out that, due to the low implantation rate of about one 20 Na per second and of about three of each of the other isotopes per second, only a small contamination from the 20 Na activity might be possible due to its long half-life and its high branching ratios of its main α groups. The energy spectra of β-delayed protons were calibrated with the known β-delayed proton or α emitters 20 Na [15], 24 Si [16], 21 Mg [17], and 20 Mg [18,19]. 23 Si β-delayed protons have been measured in both the last silicon detector and the MSGC.…”

Section: Experimental Techniquementioning

confidence: 99%

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Spectroscopic studies of the βp and β2p decay of 23Si

Blank

Boué

Andriamonje

et al. 1997

Z Phys A - Particles and Fields

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23 Si isotopes have been produced as projectile fragments of a 36 Ar primary beam at 95 MeV/nucleon at the LISE3 spectrometer of GANIL. After implantation in a detector telescope, β-delayed one-proton and β-delayed two-proton emission has been observed. The main one-proton peaks are at (1.32±0.04)MeV, (2.40±0.04)MeV, and (2.83±0.06)MeV. The total decay energy for the β2p decay is (6.18±0.10)MeV for the decay to the ground state and (5.86±0.10)MeV for the decay to the first excited state in the daughter nucleus. However, energetically possible decays via βpα and β3p emission have not been identified. The spectra allowed us to determine the excitation energy of the isobaric analogue state in 23 Al. This enabled us to calculate the coefficients of the T = 5/2 isobaric multiplet mass equation for A = 23. The mass excess of the 23 Si ground state was deduced. This value is compared to different theoretical predictions. Additionally, we determined the branching ratios for the different decay branches. A halflife measurement yielded T 1/2 = (40.7±0.4)ms.

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“…These masses are needed for the Kelson-Garvey mass relation [5] which is used to predict the masses of proton-rich nuclides with Tz~-l; this method has proven to be the most effective in this region. The masses of the Tz = --, ' nuclei used in the Kelson-iGarvey mass relation have been predicted by a Coulomb displacement energy formula [6]. Using this method, the mass excess for Se is -33.35+0.27 MeV.…”

mentioning

confidence: 99%

Beta-delayed proton decay ofSe65

et al. 1993

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The Tz= --', 3 =4n+1 nuclide 'Se produced in the Ca( 'Si, 3n) reaction has been observed via beta-delayed proton emission. A single proton group at 3.55+0.03 MeV has been observed, corresponding to the decay of the T =isobaric analog state in 'As to the ground state of Ge. Combining this measurement with a Coulomb displacement energy calculation yields a mass excess for 'Se of -33.41+0.26 MeV. PACS number(s): 23.40.s, 27.50.+e

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Predicted masses and excitation energies in higher isospin multiplets for 9 ⩽ A ⩽ 60

Cited by 41 publications

References 13 publications

Evaluated experimental isobaric analogue states from T=1/2 to T=3 and associated IMME coefficients

Evaluated experimental isobaric analogue states from T=1/2 to T=3 and associated IMME coefficients

Spectroscopic studies of the βp and β2p decay of 23Si

Beta-delayed proton decay ofSe65

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