Research data supporting development of new production methods for terbium
theragnostic isotopes

These data were collected 2019-2021 as part of the PhD thesis work of
Rebeckah Trinder
[University of Birmingham (2022), https://etheses.bham.ac.uk/id/eprint/12624/].
This thesis is referred to as reference [1] in the text below.

Context
These data correspond to the production of terbium isotopes using helium
beams on natural-abundance europium targets at the Birmingham MC40 Cyclotron.
This work was carried out to explore an alternative production method to the
p+Gd route for the terbium novel medical isotopes which currently requires
highly enriched Gd target material. At the time of this study no data were
available for the 16-40 MeV region for the He+Eu synthesis route

As the raw data are a very large number of spectra collected over 4-6 weeks,
the information given here represent the data to support the key results
presented in the (forthcoming) publication entitled
"High-precision cyclotron production cross-section measurements for terbium
isotopes". In particular all the data shown in the figures of that article
are available here. Specifically, the data fall into two categories:
corrected counts against time-since-irradiation for half-life data, and
cross section data. The cross section data are obtained from the half-life
data fits as they represent the offset of linear fits corresponding to the
activity at the end of irradiation.

File details (half-lives):
--------------------------
half_life_tb154gs_2064_kev.txt - data and fit for the Tb-154 ground-state
    using the 2064 keV gamma-ray transition. Relates to Fig. 5.13 in Ref. [1].

half_life_tb156_534_kev_point_errchecked.txt - data and fit for Tb-156
    (ground state and isomers as no separation was possible) using the 534 keV
    gamma-ray transition. Relates to Fig. 5_15 in Ref. [1].

half_life_tb155_105_kev_points_errchecked.txt - data and fit for the Tb-155
    ground state using the 105 keV gamma-ray transition. Relates to Fig. 5.14
    in Ref. [1].

half_life_tb154m2_427_kev_points_errchecked.txt - data and fit for the Tb-154
    m2 metastable state using the 427 keV gamma-ray transition. Relates to
    Fig. 5.09b in Ref. [1].

half_life_tb154m1_540_kev_points_errchecked.txt - data and fit for the Tb-154
    m1 metastable state using the 540 keV gamma-ray transition. Relates
    to Fig. 5.11 in Ref. [1].

half_life_tb153_212_kev_points_errchecked.txt - data and fit for the Tb-153
    ground state using the 212 keV gamma-ray transition. Relates to Fig 5.08
    in Ref. [1].

half_life_tb152m1_283_kev_points_errchecked.txt - data and fit for the Tb-152
    m1 metastable state using the 283 keV gamma-ray transition. Relates to
    Fig. 5.05 in Ref. [1].

half_life_tb152_271_kev_points_errchecked.txt - data and fit for the Tb-152
    ground state using the 271 keV gamma-ray transition (measured after more
    than 9 half-lives of the m1 state had elapsed). Relates to Fig. 5.07 in
    Ref. [1].

half_life_tb151_287_kev_points_errchecked.txt - data and fit for the Tb-151
    half-life using the 287 keV gamma-ray transition. Relates to Fig. 5.04
    in Ref. [1].


File details (cross sections):
------------------------------
Note that the final dataset in each file is the same as the first dataset (i.e.
the experiment data measured in the current work), but repeated for plotting
purposes to make sure they lie in the foreground.

tb156tot_final.txt - measured Tb-156 cross sections (all states) as a function
    of beam energy. The second dataset corresponds to TALYS-2.0 calculations
    for Tb-156 (all states). The third to TALYS-2.0 for the Tb-156 ground-state
    only. The fourth and fifth to the TALYS-2.0 predictions of the m1 and m2
    states in Tb-156 respectively. Datasets six and seven are literature data
    for comparison (see dataset headings for details).

tb155gs_final.txt - measured Tb-155 cross sections as a function of beam energy. 
    The second dataset corresponds to TALYS-2.0 calculations for the Tb-155
    ground state. The third and fourth datasets are literature data for
    comparison (see dataset headings for details).

tb154tot_final.txt - measured Tb-154 cross sections (all states) as a function
    of beam energy. The second dataset corresponds to TALYS-2.0 calculations
    for Tb-154 (all states). TALYS was modified from the defaults to including
    the Tb-154m1 state and the m2 excitation energy was adjusted from 400 keV
    to 200 keV to match the current NDS compilation data
    [C.W. Reich, Nuclear Data Sheets 110 (2009) 2257].
    The third dataset is the corresponding unmodified TALYS-2.0 prediction
    for comparison. The fourth dataset is literature data for comparison (see
    dataset headings for details).

tb154m2_final.txt - measured Tb-154m2 cross sections as a function
    of beam energy. The second and third datasets are the modified and
    unmodified TALYS-2.0 calculations for the Tb-154m2 state population
    respectively. The datasets four, fives and six are literature data for
    comparison (see dataset headings for details).

tb154m1_final.txt - measured Tb-154m1 cross sections as a function
    of beam energy. The second dataset is the modified TALYS-2.0 calculation
    for the Tb-154m1 state population. Datasets three, four and fives are
    literature data for comparison (see dataset headings for details).

tb154gs_final.txt - measured Tb-154 ground-state (gs) cross sections as a
    function of beam energy. The second and third datasets are the modified and
    unmodified TALYS-2.0 calculations for the Tb-154gs population respectively.
    The fourth and fifth datasets are literature data for comparison (see
    dataset headings for details).

tb153gs_final.txt - measured Tb-153 ground-state cross sections as a function
    of beam energy. The second dataset is the modified TALYS-2.0 calculation
    for the Tb-153gs state population. Datasets three, four and five are
    literature data for comparison (see dataset headings for details).

tb152tot_final.txt - measured Tb-152 cross sections (all states) as a function
    of beam energy. The second dataset is the modified TALYS-2.0 calculation
    for the population of all Tb-152 states. The third and fourth datasets are
    the corresponding calculations for the ground-state and m1 isomer
    respectively. The fifth and sixth datasets are literature data for
    comparison (see dataset headings for details).

tb152m1_final.txt - measured Tb-152m1 cross sections as a function of beam
    energy. The second dataset is the modified TALYS-2.0 calculation
    for the Tb-152m1 state population.

tb151tot_final.txt - measured Tb-151 cross sections (all states) as a function
    of beam energy. The second dataset is the modified TALYS-2.0 calculation
    for the population of all Tb-151 states. The third and fourth datasets are
    the corresponding calculations for the ground-state and m1 isomer
    respectively. Note the m1 calculation has been multiplied by 0.943 which
    represents the internal isomer decay branch to the ground state. The fifth
    and sixth datasets are literature data for comparison (see dataset headings
    for details).