Beams

FRIB offers fast, stopped, and reaccelerated rare-isotope beams from the FRIB linac. Rare-isotope beams are produced from a primary beam that impinges on a target. In addition, FRIB offers stable and long-lived radioactive beams that may be run at ReA3, ReA6, or the stopped beam area in stand-alone mode (that is, not coupled to the FRIB linac).

FRIB primary beams

Element 

Z

A

Maximum energy (MeV/u) 

Maximum power (kW) 

O

8

16

288

10

O

8

18

253

10

Ne

10

22

258

10

Ar

18

36

288

10

Ca

20

48

238

10

Ni*

28

58

263

10

Ni*

28

64

241

10

Zn*

30

70

238

10

Kr

36

78

256

10

Se

34

82

230

10

Kr

36

86

231

10

Mo

42

92

248

10

Xe

54

124

227

10

Pt*

78

198

186

5

Pb*

82

208

185

5

U

92

238

180

5


* new primary beam offered for PAC2

Rare isotope beam rates

Rare isotope beam rates used in proposals must be calculated by an FRIB beam physicist. Please contact the FRIB Manager for User Relations with the isotope for which you would like the rate and purity calculated, and the Manager for User Relations will make the request to the FRIB beam physics group. An approximate estimate can be obtained from the calculator.

For further information on how rates are calculated:

  • LISE++ tutorial: Making 64Cr. This PDF shows an example of developing — in simulation — a rare-isotope beam at FRIB. It shows some options to optimize the beam for either higher rate or higher purity.

Beam list for stand-alone operation at ReA3, ReA6, or Stopped Beam Area

The following list includes stable and long-lived radioactive beams that may be run at ReA3, ReA6, or the stopped beam area in stand-alone mode (that is, not coupled to the FRIB linac).

Please note that beams of long-lived and rare stable isotopes are subject to availability of material at the time of the experiment.

Z

Element

A

Maximum intensity
(pps) **

Q

Maximum energy
ReA3 (MeV/u)

Maximum energy
ReA6 (MeV/u)

Half-life ***

1

H

1

1.0E+10

1

6.0

12.0

2

He

3

1.0E+08

1

4.0

8.0

4

1.0E+08

2

6.0

12.0

4

1.0E+10

1

3.0

6.0

3

Li

6

1.0E+07

2

4.0

8.0

7

1.0E+07

3

5.1

10.3

4

Be

7

5.0E+05

3

5.1

10.3

53 days

9

1.0E+07

4

5.3

10.7

10

5.0E+05

4

4.8

9.6

1.5x10^6 years

5

B

10

1.0E+06

4

4.8

9.6

11

2.6E+06

5

5.5

10.9

6

C

12

1.0E+08

5

5.0

10.0

13

1.0E+08

6

5.5

11.1

7

N

14

1.0E+08

6

5.1

10.3

15

1.0E+08

7

5.6

11.2

8

O

16

1.0E+08

7

5.3

10.5

17

1.0E+05

8

5.6

11.3

18

1.0E+07

8

5.3

10.7

9

F

19

1.0E+06

9

5.7

11.4

10

Ne

20

1.0E+09

9

5.4

10.8

 

 

 

21

1.0E+06

10

5.7

11.4

 

 

 

22

1.0E+06

10

5.5

10.9

 

11

Na

23

1.0E+07

11

5.7

11.5

 

12

Mg

24

1.0E+07

11

5.5

11.0

 

 

 

25

1.0E+07

11

5.3

10.6

 

 

 

26

1.0E+07

11

5.1

10.2

 

13

Al

26

1.0E+06

12

5.5

11.1

7x10^5 years

 

 

27

1.0E+08

12

5.3

10.7

 

14

Si

28

1.0E+07

13

5.6

11.1

 

 

 

29

1.0E+07

13

5.4

10.8

 

 

 

30

1.0E+07

13

5.2

10.4

 

 

 

32

1.0E+06

13

4.9

9.8

153 years

15

P

31

1.0E+07

14

5.4

10.8

 

 

 

33

1.0E+06

14

5.1

10.2

25 days

16

S

32

1.0E+06

15

5.6

11.3

 

 

 

33

1.0E+07

14

5.1

10.2

 

 

 

34

1.0E+07

14

4.9

9.9

 

 

 

36

1.0E+05

14

4.7

9.3

 

17

Cl

35

1.0E+07

15

5.1

10.3

 

 

 

37

1.0E+07

15

4.9

9.7

 

18

Ar

36

1.0E+07

16

5.3

10.7

 

 

 

38

1.0E+05

16

5.1

10.1

 

 

 

40

1.0E+07

16

4.8

9.6

 

19

K

39

1.0E+07

17

5.2

10.5

 

 

 

41

1.0E+07

17

5.0

10.0

 

20

Ca

40

1.0E+06

19

5.7

11.4

 

 

 

41

1.0E+04

17

5.0

10.0

99,400 years

 

 

42

1.0E+06

17

4.9

9.7

 

 

 

43

1.0E+06

18

5.0

10.0

 

 

 

44

1.0E+06

18

4.9

9.8

 

 

 

46

1.0E+06

18

4.7

9.4

 

 

 

48

1.0E+06

17

4.3

8.5

 

22

Ti

46

1.0E+06

20

5.2

10.4

 

 

 

47

1.0E+06

20

5.1

10.2

 

 

 

48

1.0E+06

19

4.8

9.5

 

 

 

49

1.0E+06

20

4.9

9.8

 

 

 

50

1.0E+06

20

4.8

9.6

 

23

V

48

1.0E+03

22

5.5

11.0

15 days

 

 

49

1.0E+06

20

4.9

9.8

330 days

 

 

50

1.0E+06

21

5.0

10.1

 

 

 

51

1.0E+06

21

4.9

9.9

 

24

Cr

50

1.0E+06

22

5.3

10.6

 

 

 

52

1.0E+06

22

5.1

10.2

 

 

 

53

1.0E+06

22

5.0

10.0

 

 

 

54

1.0E+06

22

4.9

9.8

 

26

Fe

54

1.0E+06

24

5.3

10.7

 

 

 

55

1.0E+06

24

5.2

10.5

2.7 years

 

 

56

1.0E+06

23

4.9

9.9

 

 

 

57

1.0E+06

24

5.1

10.1

 

 

 

58

1.0E+06

24

5.0

9.9

 

 

 

59

1.0E+03

24

4.9

9.8

44 days

 

 

60

1.0E+04

25

5.0

10.0

2.6x10^6 years

28

Ni

56

1.0E+04

24

5.1

10.3

6 days

 

 

58

1.0E+06

26

5.4

10.8

 

 

 

60

1.0E+06

26

5.2

10.4

 

 

 

61

1.0E+06

26

5.1

10.2

 

 

 

62

1.0E+06

26

5.0

10.1

 

 

 

64

1.0E+06

26

4.9

9.8

 

29

Cu

63

1.0E+06

26

5.0

9.9

 

 

 

65

1.0E+06

27

5.0

10.0

 

30

Zn

64

1.0E+06

27

5.1

10.1

 

 

 

66

1.0E+06

28

5.1

10.2

 

 

 

67

1.0E+06

28

5.0

10.0

 

 

 

68

1.0E+06

28

4.9

9.9

 

 

 

70

1.0E+05

28

4.8

9.6

 

31

Ga

69

1.0E+06

29

5.0

10.1

 

 

 

71

1.0E+06

29

4.9

9.8

 

32

Ge

70

1.0E+06

29

5.0

9.9

 

 

 

72

1.0E+06

29

4.8

9.7

 

 

 

73

1.0E+06

29

4.8

9.5

 

 

 

74

1.0E+06

29

4.7

9.4

 

 

 

76

1.0E+06

29

4.6

9.2

 

33

As

73

1.0E+06

29

4.8

9.5

80 days

 

 

75

1.0E+05

29

4.6

9.3

 

34

Se

74

1.0E+05

32

5.2

10.4

 

 

 

76

1.0E+06

32

5.1

10.1

 

 

 

77

1.0E+06

32

5.0

10.0

 

 

 

78

1.0E+06

32

4.9

9.8

 

 

 

80

1.0E+06

32

4.8

9.6

 

 

 

82

1.0E+06

32

4.7

9.4

 

35

Br

79

1.0E+06

32

4.9

9.7

 

 

 

81

1.0E+06

32

4.7

9.5

 

36

Kr

78

1.0E+07

32

4.9

9.8

 

 

 

80

1.0E+07

32

4.8

9.6

 

 

 

82

1.0E+07

32

4.7

9.4

 

 

 

83

1.0E+07

32

4.6

9.3

 

 

 

84

1.0E+07

32

4.6

9.1

 

 

 

86

1.0E+07

32

4.5

8.9

 

37

Rb

83

1.0E+05

32

4.6

9.3

86.2 days

 

 

85

1.0E+07

32

4.5

9.0

 

 

 

87

4.0E+06

32

4.4

8.8

 

38

Sr

84

1.0E+06

32

4.6

9.1

 

 

 

86

1.0E+06

32

4.5

8.9

 

 

 

87

1.0E+06

32

4.4

8.8

 

 

 

88

1.0E+06

32

4.4

8.7

 

46

Pd

102

1.0E+06

39

4.6

9.2

 

 

 

104

1.0E+06

38

4.4

8.8

 

 

 

105

1.0E+06

39

4.5

8.9

 

 

 

106

1.0E+06

39

4.4

8.8

 

 

 

108

1.0E+06

39

4.3

8.7

 

 

 

110

1.0E+06

39

4.3

8.5

 

47

Ag

107

1.0E+06

40

4.5

9.0

 

 

 

109

1.0E+06

39

4.3

8.6

 

48

Cd

106

1.0E+06

41

4.6

9.3

 

 

 

108

1.0E+06

41

4.6

9.1

 

 

 

110

1.0E+06

41

4.5

8.9

 

 

 

111

1.0E+06

41

4.4

8.9

 

 

 

112

1.0E+06

41

4.4

8.8

 

 

 

113

1.0E+06

41

4.4

8.7

 

 

 

114

1.0E+06

41

4.3

8.6

 

 

 

116

1.0E+06

41

4.2

8.5

 

49

In

113

1.0E+06

42

4.5

8.9

 

 

 

115

1.0E+06

42

4.4

8.8

 

50

Sn

112

1.0E+06

43

4.6

9.2

 

 

 

114

1.0E+06

43

4.5

9.1

 

 

 

115

1.0E+06

43

4.5

9.0

 

 

 

116

1.0E+06

43

4.4

8.9

 

 

 

117

1.0E+06

43

4.4

8.8

 

 

 

118

1.0E+06

43

4.4

8.7

 

 

 

119

1.0E+06

43

4.3

8.7

 

 

 

120

1.0E+06

43

4.3

8.6

 

 

 

122

1.0E+06

43

4.2

8.5

 

 

 

124

1.0E+06

43

4.2

8.3

 

51

Sb

121

1.0E+06

44

4.4

8.7

 

 

 

123

1.0E+06

44

4.3

8.6

 

52

Te

120

1.0E+06

44

4.4

8.8

 

 

 

122

1.0E+06

45

4.4

8.9

 

 

 

123

1.0E+06

45

4.4

8.8

 

 

 

124

1.0E+06

45

4.4

8.7

 

 

 

125

1.0E+06

45

4.3

8.6

 

 

 

126

1.0E+06

45

4.3

8.6

 

 

 

128

1.0E+06

45

4.2

8.4

 

 

 

130

1.0E+06

45

4.2

8.3

 

53

I

127

1.0E+06

46

4.3

8.7

 

54

Xe

124

1.0E+06

47

4.5

9.1

 

 

 

126

1.0E+06

47

4.5

9.0

 

 

 

128

1.0E+06

47

4.4

8.8

 

 

 

129

1.0E+06

47

4.4

8.7

 

 

 

130

1.0E+06

47

4.3

8.7

 

 

 

131

1.0E+06

47

4.3

8.6

 

 

 

132

1.0E+06

47

4.3

8.5

 

 

 

134

1.0E+06

47

4.2

8.4

 

 

 

136

1.0E+06

47

4.1

8.3

 

55

Cs

133

1.0E+06

47

4.2

8.5

 

 
** Intensities are quoted for the charge states indicated. Intensities can vary with the charge state and energy.

  • Higher energies for heavy isotopes can be obtained with reduced intensity.

  • Higher intensities may be obtained by choosing a lower charge state than indicated, which would also come at a lower energy.

  • Please contact the Manager for User Relations for a specific energy or beam intensity.

*** Half-lives are given for the long-lived isotopes. Isotopes with no half-lives given are stable.