Author: Balraj Singh |  Citation: ENSDF |  Cutoff date: 20-JUL-2015 

Author: Jean Blachot |  Citation: Nucl. Data Sheets 110, 1239 (2009) |  Cutoff date: 1-Feb-2008 

 Full ENSDF file | Adopted Levels (PDF version) 

Q(β-)=9085 keV 7S(n)= 3460 keV 27S(p)= 15090 keV SYQ(α)= -8090 keV SY
Reference: 2012WA38

General Comments:

1994Be24, 1997Be70, 1998Do08: 111Mo produced and identified in Pb,Be(238U,F), E=750 MeV/nucleon, followed by on-line fragment separator and time of flight method at GSI facility.

1997So07: 111Mo formed in 208Pb(238U,F),E=20 MeV/nucleon, measured production σ

2009Pe06 (also 2011Pe34): 111Mo formed by fragmentation of 136Xe beam at 120 MeV/nucleon at NSCL facility using Coupled Cyclotrons and A1900 fragment separator. The time-of-flight and transversal positions of each particle was measured using two plastic scintillators. The ΔE energy loss in a Si PIN detector was measured which, when combined with time-of-flight (tof) and transversal position measurements, allowed for an event-by-event identification of the transmitted nuclei. Transmitted nuclei and their β decays were measured using the β counting system consisting of four Si PIN detectors and a double-sided Si strip detector. β-delayed neutrons were measured in coincidence with β-decay precursor using neutron emission ratio observer (NERO) detector consisting of 60 proportional gas counter tubes embedded in polyethylene moderator matrix. The γ rays were measured with SeGA Ge detectors. Measured isotopic half-lives and delayed neutron emission probabilities Isotopic half-life was measured by 2009Pe06 from least-squares fit and maximum likelihood method of time differences of implantations and correlated β decay events.

2011Ku16: 111Mo isotope produced in E=25 MeV deuteron-induced fission of natural uranium and separated using IGISOL3 mass separator at JYFL facility. Isobaric purification was achieved by JYFLTRAP Penning trap system and an MCP detector resulting in a monoisotopic beam of 111Mo. The β and γ radiations were detected using plastic scintillators, two 120% Ge detectors, and a LEPS detector. Measured Eγ, Iγ, γγ, γ(x ray) coin, βγ coin, T1/2 of 111Mo. The authors suggest two activities, a low spin (1/2+,3/2+) of 186 ms 9 half-life and another of high spin (7/2-,9/2-) of ≈200 ms half-life

2015Lo04: 111Mo nuclide produced at RIBF-RIKEN facility in 9Be(238U,F) reaction at E=345 MeV/nucleon with an average intensity of 6×1010 ions/s. Identification of 111Mo was made by determining atomic Z and mass-to-charge ratio α/Q, where Q=charge state of the ions. The selectivity of ions was based on magnetic rigidity, time-of-flight and energy loss. The separated nuclei were implanted at a rate of 50 ions/s in a stack of eight double-sided silicon-strip detector (WAS3ABi), surrounded by EURICA array of 84 HPGe detectors. Correlations were recorded between the implanted ions and β rays. The half-life of 111Mo isotope was measured from the correlated ion-β decay curves and maximum likelihood analysis technique as described in 2014Xu07. Comparison of measured half-lives with FRDM+QRPA, KTUY+GT2 and DF3+CQRPA theoretical calculations

Mass measurement: 2011Ha48

2014Sa18, 2013Fa05, 1981Al25: theoretical calculation of T1/2 and %β-n

Q-value: Estimated uncertainties (2012Wa38): 200 for S(p), 300 for Q(α)

Q-value: Q(β-n)=3023 15, S(2n)=9408 17, S(2p)=28320 500 (syst) (2012Wa38).

Jπ(level) T1/2(level)
    0 (1/2+,3/2+) 186 ms 9 
% β- = 100
% β-n < 12
  0+X (7/2-,9/2-) ≈ 200 ms
% β- = 100
% β-n = ?

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Additional Level Data and Comments:

    0(1/2+,3/2+) 186 ms 9 
% β- = 100
% β-n < 12
Theoretical T1/2=80.8 ms, %β-n=0.03 (2003Mo09).

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