27F 9BE(29NE,N26F) 2012CH12 201108 27F H TYP=MOD$AUT=M.S. BASUNIA$DAT=26-Jun-2012$COM=added this dataset$ 27F H TYP=FUL$AUT=M. Shamsuzzoha Basunia$CIT=NDS 112, 1875 (2011)$ 27F 2 H CUT=30-Nov-2010$ 27F c {+29}Ne beam, E=62 MeV/nucleon, was produced by fragmentation 27F 2c of {+48}Ca beam, E=140 MeV/nucleon, on a Be target at 27F 3c NSCL facility. Fragments were separated by a1900 Fragment separator 27F 4c and identified by time-of-flight and energy loss information. 27F 5c Detected charged fragments, neutrons and |g-rays in coin mode. The 27F 6c |g-rays were detected using a Caesium Iodide detector array. The 27F 7c charged fragments were deflected by a Sweeper magnet and passed 27F 8c through a pair of cathode readout drift chambers, ionization chamber, 27F 9c and plastic scintillators. Neutrons were detected in Modular Neutron 27F ac array. Identified a neutron-unbound state at 2.50 MeV in {+27}F. 27F bc The unbound states in {+27}F was deduced from the measured relative 27F cc energy spectrum for 26f+n coincidences. No |g-ray events were 27F dc recorded in the Caesium Iodide detector array in the coincidence mode. 27F L 0.0 (5/2+) 27F cL $|G{-0}=5.0 ms {I2} 27F cL J,T$From Adopted Levels 27F L 2.50E3 22 27F cL $|G{-0}=10 keV 27F cL E$resonance energy=380 keV 60 from fit of energy spectrum for 27F 2cL 26f+n coincidence spectrum with Maxwellian distribution and L=2 27F 3cL Breit-Wigner resonance. Comparisons with shell-model calculations. 27F ADOPTED LEVELS, GAMMAS 11NDS 201108 27F H TYP=MOD$AUT=M.S. BASUNIA$DAT=27-Jun-2012$COM=1231 keV level 27F 2 H and 504G are added from the 1H(27F,27F'G) dataset. Also updated with 27F 3 H the 9BE(29NE,N26F) dataset$ 27F H TYP=FUL$AUT=M. Shamsuzzoha Basunia$CIT=NDS 112, 1875 (2011)$ 27F 2 H CUT=30-Nov-2010$ 27F Q 1.759E4 202.11E3 211.739E4 25-1.61E4 SY 2012WA38 27F cQ $Note: Current evaluation has used the following Q record 27F 2cQ 17.6E3 2 {I2}.1E3 2 {I17802} syst -16238 syst 2011AuZZ 27F cQ |DS(p)=241 (syst); |DQ(|a)=353 (syst) (2011AuZZ) 27F cQ $Q(|b{+-})=17900 {I400}, S(n)=1400 {I400}, S(p)=18100 {I500}(syst), 27F 2cQ Q(|a)=-15900 {I500}(syst) 2003Au03 27F c Some recent nuclear structure calculations: 2006Ko02, 2004La24, 27F 2c 2004Mi31, 2002Ka73, 2002St29. 27F c Atomic mass excess measurement: 24630 keV 190 (2007Ju03) 27F c Measured {+27}F production cross-sections: |s{-f}=2.1 nb 7 from 27F 2c {+40}Ar fragmentation, E=1.06 GeV/u, on Be target (2000Oz01). 27F c 38.97 MeV/u and 34.00 MeV/u beams of {+27}F on a Si target, 27F 2c measured |s=2096 (164) mb and |s=2468 (256) mb, respectively, for the 27F 3c Si({+27}F,x) reaction (2006Kh08). A squared reduced absorption radius 27F 4c of r{-0}{+2}=1.16 (7) fm{+2} is deduced and used to study the isospin 27F 5c dependence. 27F XA1H(27F,27F'G) 27F XB9BE(29NE,N26F) 27F PN 6 27F L 0.0 (5/2+) 5.0 MS 2 27F 2 L XREF=AB 27F 2 L %B-=100$%B-N=77 21 27F cL %B-N$From 1999Re16. Other: 90 {I30} (1999Dl01). 27F cL J$From systematics of odd mass fluorine isotopes (2003Au02) 27F cL T$Weighted average of 5.3 ms {I9} (|b-decay time spectrum-1997Ta22), 27F 2cL 5.2 ms {I3} (1999Dl01), 6.5 ms {I11} (1999Re16), and 4.9 ms {I2} 27F xcL (1998NoZW). 27F L 777 (1/2+) 27F 2 L XREF=A 27F cL E,J$The shell model calculation predicts a level energy for the 1/2+ 27F 2cL excited state at 1100 keV. An excited state closer to this energy 27F 3cL can be constructed using the 504|g and 777|g in cascade. However, a 27F 4cL state directly feeding the g.s. is more likely (2004El10). 27F G 777 19 100 27F L 1281 (1/2-) ? 27F 2 L XREF=A 27F cL E,J$From 777 keV + 504 keV |g-rays. Spin/parity assignment from a 27F 2cL comparison to other fluorine isotopes, however was not supported by 27F 3cL theoretical calculations. The derived octapole deformation 27F 4cL parameter |b{-3}=0.7 {I2} do not contradict with the assumption of the 27F 5cL existence of a deformed 1/2- state in {+27}F. 27F G 504 15 ? 27F L 2.50E3 22 10 KEV 27F 2 L XREF=B 27F 1H(27F,27F'G) 2004EL10 11NDS 201108 27F H TYP=MOD$AUT=M.S. BASUNIA$DAT=26-Jun-2012$COM=added 1281 keV level and 27F 2 H placement of 504G$ 27F H TYP=FUL$AUT=M. Shamsuzzoha Basunia$CIT=NDS 112, 1875 (2011)$ 27F 2 H CUT=30-Nov-2010$ 27F c 2004El10: {+1}H({+27}F,{+27}F'|g); {+27}F was obtained by bombarding a 27F 2c {+181}Ta target with a primary beam of {+40}Ar, E=94 MeV/u; reaction 27F 3c products were momentum and mass analyzed using the RIPS fragment 27F 4c separator at RIKEN, and identified by energy loss, time-of-flight and 27F 5c magnetic rigidity; the secondary beam of {+27}F, E=40 MeV/u, directed 27F 6c to a liquid hydrogen target; E|g was measured using a setup of 146 27F 7c NaI(Tl) scintillator detectors. 27F cL J$From Adopted Levels. 27F L 0.0 (5/2+) 27F L 777 (1/2+) 27F G 777 19 27F L 1281 (1/2-) ? 27F cL E,J$From 777 keV + 504 keV |g-rays. Spin/parity assignment from a 27F 2cL comparison with other fluorine isotopes, however was not supported by 27F 3cL theoretical calculations. The derived octapole deformation 27F 4cL parameter |b{-3}=0.7 {I2} do not contradict to the assumption of the 27F 5cL existence of a deformed 1/2- state in {+27}F. 27F G 504 15 ?