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CARIBU Beams

Californium Rare Isotope Breeder Upgrade (CARIBU) provides beams of californium-252 fission fragments, neutron-rich isotopes far from stability, for experimenters.

The facility allows for fast, efficient and essential chemistry-free extraction of fission fragments. CARIBU uses a gas catcher and various isotope separation techniques to provide low-energy beams for mass measurements, beta decay or laser manipulation, or for injection into the ATLAS accelerator following charge breeding.

For more information on what beams, energies, and intensities are available, please contact the ATLAS User Liaison. Below is a table of CARIBU beams and their expected intensity in 2021.

A table of CARIBU beams

The rates, given in the last two columns for Low Energy and Re-accelerated beams, are in ions per second.

Nuclide A Z N t1/2 Low Energy Re-Accelerated
83As 83 33 50 13.4 s 4.07E+02 5.29E+01
83Se 83 34 49 22.3 m 1.58E+02 2.06E+01
84As 84 33 51 5.5 s 3.84E+02 5.00E+01
84Se 84 34 50 3.3 m 4.48E+02 5.82E+01
85As 85 33 52 2.03 s 4.56E+02 5.93E+01
85Se-m 85 34 51 19 s 6.58E+02 8.56E+01
85Se 85 34 51 39 s 6.58E+02 8.56E+01
85Br 85 35 50 2.87 m 3.37E+02 4.38E+01
86As 86 33 53 0.9 s 1.64E+02 2.13E+01
86Se 86 34 52 15 s 1.18E+03 1.53E+02
86Br-m 86 35 51 4.5 s 3.69E+02 4.79E+01
86Br 86 35 51 55.5 s 3.69E+02 4.79E+01
87Se 87 34 53 5.6 s 1.25E+03 1.62E+02
87Br 87 35 52 55.9 s 1.93E+03 2.51E+02
87Kr 87 36 51 1.27 h 3.93E+02 5.11E+01
88Se 88 34 54 1.5 s 7.76E+02 1.01E+02
88Br 88 35 53 16.4 s 2.97E+03 3.86E+02
88Kr 88 36 52 2.84 h 1.55E+03 2.01E+02
89Se 89 34 55 0.41 s 2.69E+02 3.49E+01
89Br 89 35 54 4.37 s 2.63E+03 3.42E+02
89Kr 89 36 53 3.15 m 3.05E+03 3.97E+02
89Rb 89 37 52 15.4 m 3.51E+02 4.56E+01
90Br 90 35 55 1.9 s 1.91E+03 2.49E+02
90Kr 90 36 54 32.3 s 5.88E+03 7.64E+02
90Rb-m 90 37 53 4.3 m 1.31E+03 1.71E+02
90Rb 90 37 53 2.6 m 3.07E+02 3.99E+01
91Br 91 35 56 0.54 s 7.27E+02 9.45E+01
91Kr 91 36 55 8.6 s 5.55E+03 7.21E+02
91Rb 91 37 54 58 s 3.93E+03 5.11E+02
91Sr 91 38 53 9.5 h 3.12E+02 4.06E+01
92Br 92 35 57 0.34 s 2.11E+02 2.74E+01
92Kr 92 36 56 1.84 s 4.14E+03 5.38E+02
92Rb 92 37 55 4.48 s 6.09E+03 7.92E+02
92Sr 92 38 54 2.71 h 1.43E+03 1.86E+02
93Kr 93 36 57 1.29 s 2.28E+03 2.97E+02
93Rb 93 37 56 5.85 s 8.83E+03 1.15E+03
93Sr 93 38 55 7.4 m 4.14E+03 5.38E+02
93Y 93 39 54 10.2 h 1.88E+02 2.44E+01
94Kr 94 36 58 0.21 s 8.58E+02 1.12E+02
94Rb 94 37 57 2.73 s 7.97E+03 1.04E+03
94Sr 94 38 56 1.25 m 9.60E+03 1.25E+03
94Y 94 39 55 18.7 m 1.05E+03 1.36E+02
95Kr 95 36 59 0.78 s 1.93E+02 2.51E+01
95Rb 95 37 58 0.377 s 4.70E+03 6.11E+02
95Sr 95 38 57 25.1 s 1.35E+04 1.75E+03
95Y 95 39 56 10.3 m 3.47E+03 4.52E+02
96Rb 96 37 59 0.199 s 2.23E+03 2.90E+02
96Sr 96 38 58 1.06 s 1.56E+04 2.03E+03
96Y-m 96 39 57 9.6 s 8.62E+03 1.12E+03
96Y 96 39 57 6.2 s 9.56E+02 1.24E+02
97Rb 97 37 60 0.169 s 6.04E+02 7.85E+01
97Sr 97 38 59 0.42 s 1.06E+04 1.37E+03
97Y 97 39 58 3.76 s 1.53E+04 1.98E+03
97Zr 97 40 57 16.8 h 2.91E+03 3.79E+02
98Rb 98 37 61 0.107 s 1.44E+02 1.87E+01
98Sr 98 38 60 0.65 s 6.51E+03 8.46E+02
98Y-m 98 39 59 2.1 s 1.13E+04 1.47E+03
98Y 98 39 59 0.59 s 1.13E+04 1.47E+03
98Zr 98 40 58 30.7 s 1.03E+04 1.34E+03
98Nb 98 41 57 2.9 s 2.84E+02 3.70E+01
99Sr 99 38 61 0.269 s 2.37E+03 3.08E+02
99Y 99 39 60 1.47 s 2.02E+04 2.62E+03
99Zr 99 40 59 2.2 s 2.19E+04 2.85E+03
99Nb-m 99 41 58 2.6 m 1.88E+03 2.44E+02
99Nb 99 41 58 15 s 1.64E+02 2.13E+01
100Sr 100 38 62 0.201 s 6.18E+02 8.03E+01
100Y 100 39 61 0.73 s 1.37E+04 1.78E+03
100Zr 100 40 60 7.1 s 3.62E+04 4.70E+03
100Nb-m 100 41 59 3 s 5.00E+03 6.50E+02
100Nb 100 41 59 1.5 s 5.00E+03 6.50E+02
101Y 101 39 62 0.43 s 5.90E+03 7.67E+02
101Zr 101 40 61 2.1 s 3.86E+04 5.02E+03
101Nb 101 41 60 7.1 s 2.28E+04 2.97E+03
101Mo 101 42 59 14.6 m 1.57E+03 2.04E+02
102Y 102 39 63 0.36 s 1.45E+03 1.88E+02
102Zr 102 40 62 2.9 s 2.54E+04 3.31E+03
102Nb 102 41 61 1.3 s 3.58E+04 4.65E+03
102Mo 102 42 60 11.3 m 8.14E+03 1.06E+03
103Y 103 39 64 0.26 s 3.12E+02 4.06E+01
103Zr 103 40 63 1.3 s 1.48E+04 1.92E+03
103Nb 103 41 62 1.5 s 5.37E+04 6.98E+03
103Mo 103 42 61 1.13 m 2.58E+04 3.35E+03
103Tc 103 43 60 54 s 9.93E+02 1.29E+02
104Zr 104 40 64 1.2 s 3.93E+03 5.11E+02
104Nb 104 41 63 4.8 s 3.77E+04 4.91E+03
104Mo 104 42 62 60 s 4.97E+04 6.46E+03
104Tc 104 43 61 18.2 m 7.56E+03 9.83E+02
105Zr 105 40 65 0.493 s 6.86E+02 8.92E+01
105Nb 105 41 64 3 s 1.75E+04 2.28E+03
105Mo 105 42 63 36 s 5.30E+04 6.89E+03
105Tc 105 43 62 7.6 m 3.69E+04 4.79E+03
105Ru 105 44 61 4.44 h 1.20E+03 1.56E+02
106Nb 106 41 65 1 s 7.74E+03 1.01E+03
106Mo 106 42 64 8.4 s 6.09E+04 7.92E+03
106Tc 106 43 63 36 s 3.84E+04 5.00E+03
106Ru 106 44 62 1.02 y 3.65E+03 4.75E+02
107Nb 107 41 66 0.766 s 1.58E+03 2.06E+02
107Mo 107 42 65 3.5 s 3.53E+04 4.59E+03
107Tc 107 43 64 21.2 s 6.37E+04 8.28E+03
107Ru 107 44 63 3.8 m 1.53E+04 1.99E+03
107Rh 107 45 62 21.7 m 2.77E+02 3.60E+01
108Nb 108 41 67 0.242 s 1.79E+02 2.33E+01
108Mo 108 42 66 1.5 s 1.17E+04 1.52E+03
108Tc 108 43 65 5.1 s 5.84E+04 7.60E+03
108Ru 108 44 64 4.5 m 3.47E+04 4.52E+03
108Rh-m 108 45 63 5.9 m 1.01E+03 1.31E+02
108Rh 108 45 63 17 s 1.01E+03 1.31E+02
109Mo 109 42 67 1.41 s 2.60E+03 3.38E+02
109Tc 109 43 66 1.4 s 3.32E+04 4.31E+03
109Ru 109 44 65 34.5 s 5.25E+04 6.82E+03
109Rh-m 109 45 64 50 s 4.46E+03 5.80E+02
109Rh 109 45 64 1.34 m 1.14E+04 1.49E+03
110Mo 110 42 68 2.77 s 4.05E+02 5.27E+01
110Tc 110 43 67 0.83 s 1.50E+04 1.95E+03
110Ru 110 44 66 15 s 6.35E+04 8.26E+03
110Rh-m 110 45 65 29 s 1.18E+04 1.54E+03
110Rh 110 45 65 3.1 s 1.18E+04 1.53E+03
111Tc 111 43 68 1.98 s 3.09E+03 4.02E+02
111Ru 111 44 67 1.5 s 3.97E+04 5.16E+03
111Rh 111 45 66 11 s 4.32E+04 5.61E+03
111Pd-m 111 46 65 5.5 h 3.00E+03 3.90E+02
111Pd 111 46 65 23.4 m 2.12E+03 2.76E+02
112Tc 112 43 69 0.431 s 4.02E+02 5.22E+01
112Ru 112 44 68 4.5 s 1.65E+04 2.14E+03
112Rh 112 45 67 4 s 4.19E+04 5.45E+03
112Pd 112 46 66 20.04 h 1.31E+04 1.70E+03
112Ag 112 47 65 3.13 h 6.32E+02 8.21E+01
113Ru 113 44 69 2.7 s 3.74E+03 4.86E+02
113Rh 113 45 68 0.9 s 3.42E+04 4.45E+03
113Pd 113 46 67 1.64 m 4.19E+04 5.45E+03
113Ag-m 113 47 66 1.14 m 3.44E+03 4.47E+02
113Ag 113 47 66 5.3 h 5.16E+02 6.71E+01
114Ru 114 44 70 8.14 s 3.33E+02 4.33E+01
114Rh 114 45 69 1.8 s 9.83E+03 1.28E+03
114Pd 114 46 68 2.48 m 3.19E+04 4.15E+03
114Ag 114 47 67 4.6 s 1.60E+04 2.08E+03
115Rh 115 45 70 0.99 s 3.00E+03 3.90E+02
115Pd 115 46 69 47 s 2.98E+04 3.88E+03
115Ag-m 115 47 68 18.7 s 9.44E+03 1.23E+03
115Ag 115 47 68 20 m 7.70E+03 1.00E+03
115Cd-m 115 48 67 44.6 d 7.20E+02 9.35E+01
115Cd 115 48 67 2.228 d 2.16E+02 2.81E+01
116Rh 116 45 71 0.7 s 3.97E+02 5.16E+01
116Pd 116 46 70 12.7 s 1.44E+04 1.87E+03
116Ag-m 116 47 69 10.5 s 9.42E+03 1.23E+03
116Ag 116 47 69 2.68 m 1.14E+04 1.48E+03
117Pd 117 46 71 5 s 5.12E+03 6.66E+02
117Ag-m 117 47 70 5.3 s 9.04E+03 1.17E+03
117Ag 117 47 70 1.22 m 8.78E+03 1.14E+03
117Cd-m 117 48 69 3.4 h 2.58E+03 3.35E+02
117Cd 117 48 69 2.49 h 7.69E+02 9.99E+01
118Pd 118 46 72 2.4 s 2.23E+03 2.90E+02
118Ag-m 118 47 71 2.4 s 5.16E+03 6.71E+02
118Ag 118 47 71 4 s 5.21E+03 6.78E+02
118Cd 118 48 70 50.3 m 4.77E+03 6.21E+02
119Pd 119 46 73 1.76 s 1.49E+02 1.94E+01
119Ag 119 47 72 2.1 s 3.39E+03 4.40E+02
119Cd-m 119 48 71 2.2 m 1.56E+03 2.03E+02
119Cd 119 48 71 2.69 m 1.56E+03 2.03E+02
120Ag 120 47 73 1.23 s 1.40E+03 1.81E+02
120Cd 120 48 72 50.8 s 2.74E+03 3.56E+02
121Ag 121 47 74 0.78 s 3.33E+02 4.33E+01
121Cd 121 48 73 13.5 s 1.72E+03 2.23E+02
122Cd 122 48 74 5.3 s 1.46E+03 1.90E+02
123Cd 123 48 75 2.09 s 5.86E+02 7.62E+01
124Cd 124 48 76 1.24 s 1.93E+02 2.51E+01
124In 124 49 75 3.18 s 1.66E+02 2.16E+01
126In 126 49 77 1.63 s 1.40E+02 1.82E+01
126Sn 126 50 76 100000 y 3.11E+02 4.04E+01
127Sn-m 127 50 77 4.15 m 5.00E+02 6.50E+01
127Sn 127 50 77 2.12 h 1.22E+03 1.59E+02
128Sn 128 50 78 59.1 m 3.07E+03 3.99E+02
128Sb-m 128 51 77 10.1 m 1.66E+02 2.16E+01
129Sn-m 129 50 79 6.9 m 2.07E+03 2.69E+02
129Sn 129 50 79 2.4 m 5.05E+03 6.57E+02
129Sb 129 51 78 4.4 h 3.02E+03 3.92E+02
130In 130 49 81 0.29 s 1.79E+02 2.33E+01
130Sn 130 50 80 3.7 m 6.35E+03 8.26E+02
130Sb-m 130 51 79 6.5 m 4.91E+03 6.39E+02
130Sb 130 51 79 38.4 m 2.88E+03 3.74E+02
131Sn 131 50 81 39 s 5.19E+03 6.75E+02
131Sb 131 51 80 23 m 1.75E+04 2.27E+03
131Te-m 131 52 79 1.35 d 4.14E+03 5.38E+02
131Te 131 52 79 25 m 1.22E+03 1.59E+02
132Sn 132 50 82 40 s 2.42E+03 3.15E+02
132Sb-m 132 51 81 2.8 m 8.97E+03 1.17E+03
132Sb 132 51 81 4.2 m 1.24E+04 1.61E+03
132Te 132 52 80 3.26 d 1.36E+04 1.77E+03
132I 132 53 79 2.28 h 3.70E+02 4.81E+01
133Sn 133 50 83 1.44 s 1.10E+03 1.43E+02
133Sb 133 51 82 2.5 m 1.86E+04 2.42E+03
133Te-m 133 52 81 55.4 m 2.25E+04 2.92E+03
133Te 133 52 81 12.4 m 9.20E+03 1.20E+03
133I 133 53 80 20.8 h 3.84E+03 5.00E+02
134Sn 134 50 84 1.04 s 2.65E+02 3.45E+01
134Sb 134 51 83 0.8 s 9.79E+03 1.27E+03
134Te 134 52 82 42 m 4.12E+04 5.36E+03
134I-m 134 53 81 3.7 m 1.02E+04 1.33E+03
134I 134 53 81 52.6 m 5.81E+03 7.55E+02
134Xe-m 134 54 80 0.29 s 4.56E+02 5.93E+01
135Sb 135 51 84 1.71 s 2.56E+03 3.33E+02
135Te 135 52 83 19 s 3.12E+04 4.06E+03
135I 135 53 82 6.57 h 3.25E+04 4.22E+03
135Xe-m 135 54 81 15.3 m 3.95E+03 5.13E+02
135Xe 135 54 81 9.1 h 3.26E+03 4.24E+02
136Sb 136 51 85 0.82 s 5.30E+02 6.89E+01
136Te 136 52 84 17.5 s 1.60E+04 2.08E+03
136I-m 136 53 83 47 s 1.64E+04 2.13E+03
136I 136 53 83 1.39 m 2.39E+04 3.10E+03
137Te 137 52 85 2.5 s 4.09E+03 5.32E+02
137I 137 53 84 24.5 s 2.76E+04 3.58E+03
137Xe 137 54 83 3.82 m 4.55E+04 5.91E+03
137Cs 137 55 82 30.17 y 1.22E+04 1.58E+03
138Te 138 52 86 1.4 s 9.49E+02 1.23E+02
138I 138 53 85 6.5 s 1.76E+04 2.28E+03
138Xe 138 54 84 14.1 m 6.37E+04 8.28E+03
138Cs-m 138 55 83 2.9 m 5.28E+03 6.87E+02
138Cs 138 55 83 32.2 m 1.01E+04 1.31E+03
139Te 139 52 87 0.58 s 1.44E+02 1.88E+01
139I 139 53 86 2.3 s 7.20E+03 9.35E+02
139Xe 139 54 85 39.7 s 6.14E+04 7.99E+03
139Cs 139 55 84 9.3 m 3.21E+04 4.18E+03
139Ba 139 56 83 1.396 h 2.54E+03 3.31E+02
140I 140 53 87 0.86 s 2.04E+03 2.65E+02
140Xe 140 54 86 13.6 s 4.48E+04 5.82E+03
140Cs 140 55 85 1.06 m 4.86E+04 6.32E+03
140Ba 140 56 84 12.75 d 9.06E+03 1.18E+03
141I 141 53 88 0.45 s 4.86E+02 6.32E+01
141Xe 141 54 87 1.72 s 1.76E+04 2.28E+03
141Cs 141 55 86 24.9 s 6.65E+04 8.65E+03
141Ba 141 56 85 18.3 m 1.95E+04 2.53E+03
141La 141 57 84 3.9 h 6.53E+02 8.49E+01
142Xe 142 54 88 1.22 s 6.46E+03 8.40E+02
142Cs 142 55 87 1.8 s 4.44E+04 5.77E+03
142Ba 142 56 86 10.7 m 4.74E+04 6.16E+03
142La 142 57 85 1.54 h 7.27E+03 9.45E+02
143Xe 143 54 89 0.3 s 7.34E+02 9.54E+01
143Cs 143 55 88 1.78 s 1.30E+04 1.70E+03
143Ba 143 56 87 14.3 s 7.72E+04 1.00E+04
143La 143 57 86 14.1 m 1.84E+04 2.40E+03
143Ce 143 58 85 1.38 d 2.88E+02 3.74E+01
144Xe 144 54 90 1.2 s 2.04E+02 2.65E+01
144Cs 144 55 89 1.01 s 9.63E+03 1.25E+03
144Ba 144 56 88 11.4 s 5.91E+04 7.69E+03
144La 144 57 87 40.7 s 3.26E+04 4.24E+03
144Ce 144 58 86 284.6 d 1.77E+03 2.30E+02
145Cs 145 55 90 0.59 s 2.61E+03 3.40E+02
145Ba 145 56 89 4 s 3.62E+04 4.70E+03
145La 145 57 88 24 s 4.41E+04 5.73E+03
145Ce 145 58 87 3 m 6.09E+03 7.92E+02
146Cs 146 55 91 0.322 s 4.53E+02 5.89E+01
146Ba 146 56 90 2.2 s 1.72E+04 2.24E+03
146La 146 57 89 6.3 s 4.19E+04 5.45E+03
146Ce 146 58 88 13.5 m 1.77E+04 2.30E+03
146Pr 146 59 87 24.2 m 5.39E+02 7.00E+01
147Ba 147 56 91 0.892 s 4.39E+03 5.70E+02
147La 147 57 90 4.02 s 3.40E+04 4.43E+03
147Ce 147 58 89 56 s 3.35E+04 4.36E+03
147Pr 147 59 88 13.4 m 3.18E+03 4.13E+02
148Ba 148 56 92 0.64 s 8.42E+02 1.10E+02
148La 148 57 91 1.1 s 1.73E+04 2.25E+03
148Ce 148 58 90 56 s 4.12E+04 5.36E+03
148Pr 148 59 89 2.27 m 9.49E+03 1.23E+03
149La 149 57 92 1.1 s 4.11E+03 5.34E+02
149Ce 149 58 91 5.2 s 2.63E+04 3.42E+03
149Pr 149 59 90 2.3 m 1.63E+04 2.12E+03
149Nd 149 60 89 1.72 h 1.02E+03 1.32E+02
150La 150 57 93 0.608 s 9.67E+02 1.26E+02
150Ce 150 58 92 4.4 s 1.65E+04 2.15E+03
150Pr 150 59 91 6.2 s 2.28E+04 2.97E+03
151Ce 151 58 93 1 s 5.12E+03 6.66E+02
151Pr 151 59 92 22.4 s 1.88E+04 2.44E+03
151Nd 151 60 91 12.4 m 9.83E+03 1.28E+03
151Pm 151 61 90 1.183 d 3.77E+02 4.91E+01
152Ce 152 58 94 3.1 s 1.31E+03 1.70E+02
152Pr 152 59 93 3.2 s 1.22E+04 1.59E+03
152Nd 152 60 92 11.4 m 1.45E+04 1.89E+03
152Pm-m 152 61 91 7.5 m 1.06E+03 1.38E+02
152Pm 152 61 91 4.1 m 1.06E+03 1.38E+02
153Ce 153 58 95 1.47 s 1.79E+02 2.33E+01
153Pr 153 59 94 4.3 s 4.58E+03 5.95E+02
153Nd 153 60 93 28.9 s 1.40E+04 1.82E+03
153Pm 153 61 92 5.4 m 3.81E+03 4.95E+02
154Pr 154 59 95 2.3 s 9.35E+02 1.22E+02
154Nd 154 60 94 25.9 s 7.35E+03 9.56E+02
154Pm-m 154 61 93 2.7 m 4.48E+03 5.82E+02
154Pm 154 61 93 1.7 m 5.23E+03 6.80E+02
155Pr 155 59 96 1.12 s 2.02E+02 2.62E+01
155Nd 155 60 95 8.9 s 4.26E+03 5.54E+02
155Pm 155 61 94 48 s 7.72E+03 1.00E+03
155Sm 155 62 93 22.2 m 1.68E+03 2.19E+02
156Nd 156 60 96 5.5 s 1.84E+03 2.40E+02
156Pm 156 61 95 26.7 s 8.04E+03 1.04E+03
156Sm 156 62 94 9.4 h 1.77E+03 2.30E+02
156Eu 156 63 93 15.2 d 1.74E+02 2.26E+01
157Nd 157 60 97 2.48 s 3.11E+02 4.04E+01
157Pm 157 61 96 10.9 s 3.51E+03 4.56E+02
157Sm 157 62 95 8 m 5.00E+03 6.50E+02
157Eu 157 63 94 15.13 h 6.14E+02 7.99E+01
158Pm 158 61 97 4.8 s 1.21E+03 1.58E+02
158Sm 158 62 96 5.5 m 4.30E+03 5.59E+02
158Eu 158 63 95 45.9 m 2.60E+03 3.38E+02
159Pm 159 61 98 3 s 3.58E+02 4.65E+01
159Sm 159 62 97 11.3 s 3.09E+03 4.02E+02
159Eu 159 63 96 18.1 m 2.30E+03 2.99E+02
159Gd 159 64 95 18.6 h 2.18E+02 2.83E+01
160Sm 160 62 98 9.6 s 1.52E+03 1.98E+02
160Eu 160 63 97 38 s 2.76E+03 3.58E+02
161Sm 161 62 99 4.78 s 4.37E+02 5.68E+01
161Eu 161 63 98 27 s 1.86E+03 2.42E+02
161Gd 161 64 97 3.66 m 1.04E+03 1.36E+02
162Eu 162 63 99 11 s 8.25E+02 1.07E+02
162Gd 162 64 98 8.4 m 1.07E+03 1.39E+02
163Eu 163 63 100 7.6 s 2.67E+02 3.47E+01
163Gd 163 64 99 1.13 m 8.21E+02 1.07E+02
163Tb 163 65 98 19.5 m 2.25E+02 2.92E+01
164Gd 164 64 100 45 s 4.53E+02 5.89E+01
164Tb 164 65 99 3 m 2.90E+02 3.76E+01
165Gd 165 64 101 0.705 m 1.75E+02 2.27E+01
165Tb 165 65 100 2.1 m 2.65E+02 3.45E+01
166Tb 166 65 101 25.1 s 1.83E+02 2.37E+01