In-beam gamma-ray spectroscopy at the proton dripline: 23Al (2008)
Gade, A., Adrich, P., Bazin, D., Bowen, M. D., Brown, B. A., Campbell, C. M., ...
We report on the first in-beam $\gamma$-ray spectroscopy of \nuc{23}{Al} using two different reactions at intermediate beam energies: inelastic scattering off \nuc{9}{Be} and heavy-ion induced...
Gade, A., Adrich, P., Bazin, D., Bowen, M. D., Brown, B. A., Campbell, C. M., ...
Both one-proton and one-neutron knockout reactions were performed with fast beams of two asymmetric, neutron-deficient rare isotopes produced by projectile fragmentation. The reactions are used to...
Terry, J. R., Brown, B. A., Campbell, C. M., Cook, J. M., Davies, A. D., ...
The breakdown of the N=20 magic number in the so-called island of inversion around 32Mg is well established. Recently developed large-scale shell-model calculations suggest a transitional region...
Comparing Semigroup and Monoid Presentations for Finite Monoids (2008)
C.M. Campbell, J.D. Mitchell, N. Ruskuc
It is known that for any finite group G given by a finite... In this paper we give a necessary and sufficient condition for a finite monoid M , given by a finite monoid presentation, to have a finite...
Gade, A, Adrich, P, Bazin, D, Bowen, M D, Brown, B A, Campbell, C M, ...
Both one-proton and one-neutron knockout reactions were performed with fast beams of two asymmetric, neutron-deficient rare isotopes produced by projectile fragmentation. The reactions are used to...
Terry, J R, Brown, B A, Campbell, C M, Cook, J M, Davies, A D, Dinca, D C, ...
The breakdown of the N=20 magic number in the so-called island of inversion around Mg-32 is well established. Recently developed large-scale shell-model calculations suggest a transitional region...
Structure of Excited States in Mg-21 Studied in One-Neutron Knockout (2008)
Diget, C A, Adrich, P, Bazin, D, Bowen, M D, Brown, B A, Campbell, C M, ...
Bound excited states in the neutron-deficient nucleus Mg-21 were probed in the one-neutron knockout reaction Be-9(Mg-22, Mg-21+gamma)X at 74 MeV/nucleon projectile energy. The low-lying level scheme...
Adrich, P, Amthor, A M, Bazin, D, Bowen, M D, Brown, B A, Campbell, C M, ...
In-beam gamma-ray spectroscopy of Fe-66,Fe-68 following intermediate-energy one- and two-proton knockout from cobalt and nickel secondary beams has been performed at the National Superconducting...
Hayrullah Ayik, C. M. Campbell, J. J. O'connor, N. Ru Skuc
A finite semigroup (respectively monoid or group) S is said to be efficient if it can be defined by a semigroup (respectively monoid or group) presentation h A j R i with jRj \Gamma jAj = rank(H 2 (S
On Defining Groups Efficiently Without Using Inverses (2007)
C. M. Campbell, J. D. Mitchell, N. Ruskuc
Let G be a group, and let h A j R i be a nite group presentation for G with jRj jAj. Then there exists a nite semigroup presentation h B j Q i for G such that jQj jBj = jRj jAj. Moreover, B is either...
Gade, A, Adrich, P, Bazin, D, Bowen, M D, Brown, B A, Campbell, C M, ...
The possibility of studying particle-like states near the Fermi surfaces of exotic nuclei by using measurements of heavy-ion-induced single-nucleon pickup reactions with in-flight separated...
Gade, A, Adrich, P, Bazin, D, Bowen, M D, Brown, B A, Campbell, C M, ...
We report on the first spectroscopy study of the very neutron-rich nucleus Mg-36(12)24 using the direct two-proton knockout reaction Be-9(Si-38,Mg-36 + gamma)X at 83 MeV/nucleon. The energy of the...
Vaman, C., Andreoiu, C., Bazin, D., Becerril, A., Brown, A., Campbell, C. M., ...
Rare isotope beams of neutron-deficient $^{106,108,110}$Sn nuclei from the fragmentation of $^{124}$Xe were employed in an intermediate-energy Coulomb excitation experiment yielding $B(E2, 0^+_1 \to...
Stuchbery, A. E., Davies, A. D., Mantica, P. F., Davidson, P. M., Wilson, A. N., Becerril, A., ...
The shell structure underlying shape changes in neutron-rich nuclei between N=20 and N=28 has been investigated by a novel application of the transient field technique to measure the first-excited...
One-neutron knockout in the vicinity of the N=32 sub-shell closure: 9Be(57Cr,56Cr+ gamma)X (2006)
Gade, A., Janssens, R. V. F., Bazin, D., Brown, B. A., Campbell, C. M., Carpenter, M. P., ...
The one-neutron knockout reaction 9Be(57Cr,56Cr + gamma)X has been measured in inverse kinematics with an intermediate-energy beam. Cross sections to individual states in 56Cr were partially...
Measurement of excited states in 40Si and evidence for weakening of the N=28 shell gap (2006)
Campbell, C. M., Aoi, N., Bazin, D., Bowen, M. D., Brown, B. A., Cook, J. M., ...
Excited states in 40Si have been established by detecting gamma-rays coincident with inelastic scattering and nucleon removal reactions on a liquid hydrogen target. The low excitation energy, 986(5)...
Shell structure at N=28 near the dripline: spectroscopy of $^{42}$Si, $^{43}$P and $^{44}$S (2006)
Fridmann, J., Wiedenhoever, I., Gade, A., Baby, L. T., Bazin, D., Brown, B. A., ...
Measurements of the N=28 isotones 42Si, 43P and 44S using one- and two-proton knockout reactions from the radioactive beam nuclei 44S and 46Ar are reported. The knockout reaction cross sections for...
Gade, A., Brown, B. A., Bazin, D., Campbell, C. M., Church, J. A., ...
The energy of the first excited state in the neutron-rich N=28 nucleus 45Cl has been established via in-beam gamma-ray spectroscopy following proton removal. This energy value completes the...
Two-neutron knockout from neutron-deficient $^{34}$Ar, $^{30}$S, and $^{26}$Si (2006)
Yoneda, K., Obertelli, A., Gade, A., Bazin, D., Brown, B. A., Campbell, C. M., ...
Two-neutron knockout reactions from nuclei in the proximity of the proton dripline have been studied using intermediate-energy beams of neutron-deficient $^{34}$Ar, $^{30}$S, and $^{26}$Si. The...
Cross-shell excitation in two-proton knockout: Structure of $^{52}$Ca (2006)
Gade, A., Janssens, R. V. F., Bazin, D., Broda, R., Brown, B. A., Campbell, C. M., ...
The two-proton knockout reaction $^9$Be($^{54}$Ti,$^{52}$Ca$ + \gamma$) has been studied at 72 MeV/nucleon. Besides the strong feeding of the $^{52}$Ca ground state, the only other sizeable cross...
Population of bound excited states in intermediate-energy fragmentation reactions (2006)
Obertelli, A., Gade, A., Bazin, D., Campbell, C. M., Cook, J. M., Cottle, P. D., ...
Fragmentation reactions with intermediate-energy heavy-ion beams exhibit a wide range of reaction mechanisms, ranging from direct reactions to statistical processes. We examine this transition by...
Population of bound excited states in intermediate-energy fragmentation reactions (2006)
Obertelli, A., Gade, A., Bazin, D., Campbell, C. M., Cook, J. M., Cottle, P. D., ...
Fragmentation reactions with intermediate-energy heavy-ion beams exhibit a wide range of reaction mechanisms, ranging from direct reactions to statistical processes. We examine this transition by...
Spectroscopy of the odd-odd fp-shell nucleus 52Sc from secondary fragmentation (2006)
Gade, A., Janssens, R. V. F., Bazin, D., Brown, B. A., Campbell, C. M., Carpenter, M. P., ...
The odd-odd fp-shell nucleus 52Sc was investigated using in-beam gamma-ray spectroscopy following secondary fragmentation of a 55V and 57Cr cocktail beam. Aside from the known gamma-ray transition at...
Davies, A. D., Stuchbery, A. E., Mantica, P. F., Davidson, P. M., Wilson, A. N., Becerril, A., ...
The shell structure underlying shape changes in neutron-rich nuclei near N=28 has been investigated by a novel application of the transient field technique to measure the first-excited state g...
Cross-Shell Excitation in Two-Proton Knockout: Structure of Ca-52 (2006)
Gade, A, Janssens, R V, Bazin, D, Broda, R, Brown, B A, Campbell, C M, ...
The two-proton knockout reaction Be-9(Ti-54,Ca-52+gamma) has been studied at 72 MeV/nucleon. Besides the strong feeding of the Ca-52 ground state, the only other sizeable cross section proceeds to a...
One-Neutron Knockout in the Vicinity of the N=32 Sub-Shell Closure: Be-9(Cr-57,Cr-56+gamma)X (2006)
Gade, A, Janssens, R V, Bazin, D, Brown, B A, Campbell, C M, Carpenter, M P, ...
The one-neutron knockout reaction Be-9(Cr-57,Cr-56+gamma)X has been measured in inverse kinematics with an intermediate-energy beam. Cross sections to individual states in Cr-56 were partially...
Population of Bound Excited States in Intermediate-Energy Fragmentation Reactions (2006)
Obertelli, A, Gade, A, Bazin, D, Campbell, C M, Cook, J M, Cottle, P D, ...
Fragmentation reactions with intermediate-energy heavy-ion beams exhibit a wide range of reaction mechanisms, ranging from direct reactions to statistical processes. We examine this transition by...
Shell Structure at N=28 Near the Dripline: Spectroscopy of Si-42, P-43, and S-44 (2006)
Fridmann, J, Wiedenhover, I, Gade, A, Baby, L T, Bazin, D, Brown, B A, ...
Measurements of the N=28 isotones Si-42, P-43, and S-44 using one- and two-proton knockout reactions from the radioactive beam nuclei S-44 and Ar-46 are reported. The knockout reaction cross sections...
Two-Neutron Knockout from Neutron-Deficient Ar-34, S-30, and Si-26 (2006)
Yoneda, K, Obertelli, A, Gade, A, Bazin, D, Brown, B A, Campbell, C M, ...
Two-neutron knockout reactions from nuclei in the proximity of the proton dripline have been studied using intermediate-energy beams of neutron-deficient Ar-34, S-30, and Si-26. The inclusive cross...
Chester, A., Adrich, P., Becerril, A., Bazin, D., Campbell, C. M., Cook, J. M., ...
A novel method for picosecond lifetime measurements of excited gamma-ray emitting nuclear states has been developed for fast beams from fragmentation reactions. A test measurement was carried out...
Knockout from Ar-46 : l=3 Neutron Removal and Deviations from Eikonal Theory (2005)
Gade, A, Bazin, D, Bertulani, C A, Brown, B A, Campbell, C M, Church, J A, ...
The Be-9(Ar-46,Ar-45+gamma)X one-neutron removal reaction has been studied in inverse kinematics at 70 MeV/nucleon. Coincidences with gamma rays served to disentangle knockout events leading to the...
One-Neutron Knockout Reactions on Proton-Rich Nuclei with N=16 (2004)
Gade, A, Bazin, D, Brown, B A, Campbell, C M, Church, J A, Dinca, D C, ...
One-neutron knockout reactions from the deeply bound N=16 isotones with Z=16,17, and 18 have been studied in inverse kinematics with intermediate-energy beams. gamma-ray spectroscopy in coincidence...
Reduced Occupancy of the Deeply Bound 0d(5/2) Neutron State in Ar-32 (2004)
Gade, A, Bazin, D, Brown, B A, Campbell, C M, Church, J A, Dinca, D C, ...
The Be-9(Ar-32,Ar-31)X reaction, leading to the 5/2(+) ground state of a nucleus at the proton drip line, has a cross section of 10.4(13) mb at a beam energy of 65.1 MeV/nucleon. This translates into...
Efficient simple groups (2003)
Campbell, C. M., Havas, G., Hulpke, A., Robertson, E. F.
We prove that the simple group L-3(5) which has order 372000 is efficient by providing an efficient presentation for it. This leaves one simple group with order less than one million, S-4(4) which...
A computer program for nuclear scattering at intermediate and high energies (2002)
Bertulani, C. A., Campbell, C. M., Glasmacher, T.
A computer program is presented which calculates the elastic and inelastic scattering in intermediate and high energy nuclear collisions. A coupled-channels method is used for Coulomb and nuclear...
Efficient simple groups (2002)
Campbell, C. M., Havas, G., Hulpke, A., Robertson, E. F.
We prove that the simple group L-3(5) which has order 372000 is efficient by providing an efficient presentation for it. This leaves one simple group with order less than one million, S-4(4) which...
Campbell, C.M., Fostier, A., Jalabert, B., Truscott, B.
17alpha-Hydroxy-20beta-dihydroprogesterone and 17alpha-hydroxyprogesterone were found in higher concentrations in serum from female Salmo gairdneri undergoing final oocyte maturation immediately...
Selective protein incorporation by vitellogenic Salmo gairdneri oocyte in vitro (1979)
Campbell, C.M., Jalabert, B., Campbell, G., Heydorff, M.
An in vitro method is presented for investigation of protein incorporation into the ovarian follicles of rainbow trout (Salmo gairdneri). A protein induced into serum of S. gairdneri, after estrogen...
McKay, N G, Kinsella, J M, Campbell, C M, Ashford, M L J
Two electrode voltage clamp and single channel recordings were used to investigate the actions of various ATP-sensitive K+ (KATP) channel inhibitors on cloned KATP channels, expressed in Xenopus...
Automatic Completely-Simple Semigroups
C. M. Campbell, E. F. Robertson
The notion of automaticity has been widely studied in groups and some progress has been made in understanding the notion in the wider context of semigroups. The purpose of this paper is to study...